JP5912723B2 - Keyed brush roll - Google Patents

Description

  The present invention relates to a keyed brush roll in which an annular disk brush having a bundle of brushes implanted on the outer peripheral edge of an annular disk is extrapolated to a large number of shafts through a central hole, and the multiple annular disk brushes and the shaft are key-coupled. About.

  As a conventional brush roll with a key of this kind, the one shown in the following Patent Document 1 is known. In Patent Document 1, an expansion key is formed on the outer peripheral surface of the shaft as a means for key-binding a cylindrical brush body to the shaft. Inserted into both the key groove (shaft side key groove) and the key groove (brush body side key groove) formed on the inner peripheral surface of the central hole of the cylindrical brush body, and the core key is inserted into the expansion key. A configuration is disclosed in which the key combination is realized by inserting and expanding the expansion key in the width direction (circumferential direction) and pressing the expansion key against the inner surface of each key groove.

  That is, the key disclosed in Patent Document 1 includes an expansion key and a core key that is inserted into the expansion key and promotes expansion of the expansion key in the circumferential direction. The core key is directly attached to the inner surface of each key groove. Does not have the function of pressure contact.

  In addition, the expansion key has a configuration in which the lower end of the central portion in the axial direction is connected by a bridge portion.

  And the following patent document 1 inserts the said core key in the said extended key, and the above-mentioned by the contact | abutting of the convex part formed in the inner surface of the said extended key, and the convex part formed in both the outer surfaces of the said core key A configuration is proposed in which the extension key is extended in the circumferential direction via the bridge portion and the extension key is engaged with the shaft side keyway and the brush body side keyway.

Japanese Patent No. 3409122

  However, in Patent Document 1, when the brush body side key groove is opposed to the shaft side key groove in the circumferential direction from the normal position, the outer surface of the expansion key faces the shaft side key groove. And the inner surface of the brush body side keyway cannot be effectively contacted.

  Further, since the expansion key of Patent Document 1 has a structure in which the lower end of the central portion in the axial direction is connected by the bridge portion, the amount of expansion in the circumferential direction is far from the portion close to the bridge portion (lower end side) and the bridge portion. Different from the part (upper end side), there is a possibility that the outer surface of the expansion key cannot be properly brought into contact with the inner surfaces of the two key grooves, and the bridge portion is liable to break and loses its function.

  The present invention effectively solves the problems of the conventional keyed brush roll and provides a keyed brush roll capable of appropriately and reliably key-connecting a plurality of annular disk brushes and a shaft while having a simple structure. .

  In short, the present invention relates to a brush roll in which a plurality of annular disk brushes are externally attached to a shaft through a central hole, and a first key and a second key are used as means for key coupling the plurality of annular disk brushes to the shaft. A pair of two keys, the first key being inserted into a first key groove formed on the outer peripheral surface of the shaft, and the second key being inserted into the center hole of each annular disk brush. The first and second keys are inserted into a second key groove formed on the peripheral surface, and can slide relative to each other in the axial direction while overlapping with each other in the inserted state. The convex portion formed on the superposed surface of the second key rides on the convex portion formed on the superposed surface of the one key to increase the superposed height in the radial direction of the first and second keys. The outer surface of the first keyway Pressed against the outer surface of said second key on an inner surface of the second key groove with pressure contact with the surface and structure to achieve the key binding.

  Therefore, in the present invention, the first key and the second key are bulky in the radial direction so that the first key is pressed against the key groove on the shaft side, and at the same time, the second key is placed on the annular disk brush side key. By pressing against the groove, the key contact between the annular disk brush and the shaft can be realized by the pressure contact of the first and second keys, and the annular disk brush can be tightened and mounted on the shaft. In addition, the misalignment of the first and second key grooves can be absorbed by the overlapping surface of the first key and the overlapping surface of the second key, thereby ensuring a reliable key connection.

  As another example of the first and second keys, a first inclined surface portion inclined in the axial direction is formed on the overlapping surface of the first key, and the second key overlapping surface is inclined in the direction opposite to the first inclined surface portion. A second inclined surface portion is formed, and the second inclined surface portion of the second key rides on the first inclined surface portion of the first key by relative sliding in the axial direction of the first and second keys. The superposition height of the first and second keys in the radial direction is increased, the outer surface of the first key is pressed against the inner surface of the first key groove, and the outer surface of the second key is brought into contact with the inner surface of the second key groove. The above-described key combination is achieved by press contact.

  According to the present invention, the first key has an inverted trapezoidal shape, the first keyway has an inverted trapezoidal shape, and an outer slope that constitutes the outer surface of the first key and an inner slope that constitutes the inner surface of the first keyway. And a key gap is defined between the lower surface constituting the outer surface of the first key and the inner bottom surface constituting the inner surface of the first key groove to achieve the key connection. Can be freely adjusted in the radial direction, and the outer slope of the first key can be pressed against the inner slope of the first key groove at an optimum position.

Further, the upper surface constituting the outer surface of the second key and the inner top surface constituting the inner surface of the second key groove are pressed against each other to achieve the key coupling, and each annular disk brush is securely restrained to the outer side of the shaft. Can be inserted. Alternatively, the second key is trapezoidal and the second keyway is trapezoidal, and the outer slope that forms the outer surface of the second key and the inner slope that forms the inner surface of the second keyway are pressed together. A gap is defined between the upper surface constituting the outer surface of the second key and the inner top surface constituting the inner surface of the second key groove to achieve the key connection, and the second key is moved in the radial direction by the gap. The second key can be freely adjusted and the outer slope of the second key can be pressed against the inner slope of the second key groove at an optimum position.

  The brush roll with a key according to the present invention is appropriate and reliable by the cooperation of the configuration in which the first and second keys are superposed in the radial direction and the configuration in which the superposition height in the radial direction of the first and second keys is bulky. Key combination can be achieved.

1 is an exploded perspective view schematically showing a keyed brush roll according to Embodiment 1 of the present invention. FIG. Sectional drawing which looks at the brush roll with a key concerning Example 1 from the front. The partially expanded sectional view which sees the brush roll with a key concerning Example 1 on the right side. A is a right side view of the first key according to the first embodiment, and B is a front view of the first key. A is a right side view of the second key according to the first embodiment, and B is a front view of the second key. A is an explanatory diagram viewed from the right side of the overlapping state where the convex part of the second key is not riding on the convex part of the first key, and B is the overlapping state where the convex part of the second key is riding on the convex part of the first key. Explanatory drawing viewed from the right side, C is an explanatory diagram viewed from the right side of the overlapped state in which the convex surface portion of the second key passes over the convex surface portion of the first key and contacts the concave surface portion. 6A is a cross-sectional view of the relationship between the first and second keys and the first and second key grooves in the superposed state of FIGS. 6A and 6C, and B is the first and second keys in the superposed state of FIG. 6B. Sectional drawing which sees the relationship with a 1st, 2nd keyway in front. A and B are radial sectional views showing other examples of the outer surface shape of the second key and the inner surface shape of the second key groove. A to C are formed deeper in the first key groove and the second key groove than in FIGS. 6 and 7, and between the lower surface of the first key and the inner bottom surface of the first key groove, and the upper surface of the second key and the second key groove. Shows an example in which a key connection is made between the inner top surfaces of the first key via a gap, and A is an explanatory view showing a right side view of a superposition state in which the convex portion of the second key does not run on the convex portion of the first key, and B is Explanatory drawing which carries out the right side view of the superposition | polymerization state which the convex part of the 2nd key got on the convex part of the 1st key, C is the superposition | polymerization which the convex part of the 2nd key got over the convex part of the 1st key, and contacted the concave part Explanatory drawing which sees a state on the right side view. 9A is a cross-sectional view of the relationship between the first and second keys and the first and second key grooves in the overlapping state of FIGS. 9A and 9C, and B is the first and second keys in the overlapping state of FIG. 9B. Sectional drawing which sees the relationship with a 1st, 2nd keyway in front. The disassembled perspective view which outlines the brush roll with a key which concerns on Example 2 of this invention. Sectional drawing which looks at the brush roll with a key concerning Example 2 from the front. The partially expanded sectional view which sees the brush roll with a key concerning Example 2 on the right side. A is a right side view of the first key according to the second embodiment, and B is a rear view of the first key. A is a right side view of the second key according to the second embodiment, and B is a front view of the second key. A is an explanatory view showing a right side view of a superposition state in which the second inclined surface portion of the second key is not completely riding on the first inclined surface portion of the first key, and B is an explanatory view of the second key on the first inclined surface portion of the first key. Explanatory drawing which carries out the right side view of the superposition | polymerization state which the 2nd inclined surface part got over completely. 16A is a cross-sectional view of the relationship between the first and second keys and the first and second key grooves in the polymerization state of FIG. 16A, and B is the first, second key, and first, in the polymerization state of FIG. Sectional drawing which sees the relationship with a 2nd keyway in front. A and B are sectional views showing examples in which friction reducing grooves extending in the axial direction are formed on the overlapping surface of the first key in Example 1 and Example 2. FIG.

  A preferred embodiment of a keyed brush roll according to the present invention will be described with reference to FIGS.

≪Configuration common to each embodiment≫
As shown in FIGS. 1 and 11, a brush roll with a key according to the present invention is radially planted with a bundle of brushes 2 on the outer peripheral edge of an annular disk 1 made of metal, synthetic resin, or a composite material of metal and synthetic resin. A cylindrical brush body 4 formed by laminating a plurality of the annular disk brushes 3 is formed, and the cylindrical brush body 4 is made of metal with a central hole 4 a formed by the central hole 1 a of the annular disk 1. A configuration that is extrapolated to the shaft 5 is a basic configuration.

  A plurality of the annular disk brushes 3 are put in a laminated state, and the annular disk brushes 3 are joined through an adhesive to form the cylindrical brush body 4. Alternatively, a plurality of the annular disk brushes 3 are heated while being pressed in the axial direction, and adjacent brush materials are softened or melted at the base to bond the annular disk brushes 3 to each other to form the cylindrical brush body 4. To do.

  In the present invention, a plurality of annular disk brushes 3 are used as a cassette (cylindrical brush body 4) and the plurality of cassettes are extrapolated to a shaft 5 to perform a key combination described later, or a plurality of annular disk brushes 3 are connected to a shaft. 5 includes a case of extrapolating to 5 to make a laminated state and performing a key combination described later. In the following description, a case where a plurality of cylindrical brush bodies 4 are extrapolated to the shaft 5 to form a disc-shaped brush roll will be described.

  As shown in FIGS. 2 and 12, as a means for key-joining the cylindrical brush body 4 to the shaft 5, a pair of two keys including a first key 6 and a second key 7 is provided. Is inserted into the first key groove 8 formed on the outer peripheral surface of the shaft 5 and the second key 7 is formed on the inner peripheral surface of the central hole 4 a of the cylindrical brush body 4. The first and second keys 6 and 7 are configured to be slidable relative to each other in the axial direction while overlapping with each other in the radial direction in the inserted state.

  The first key 6 and the second key 7 are made of metal, synthetic resin, or a composite material of metal and synthetic resin.

Example 1
In the keyed brush roll according to the first embodiment of the present invention, as shown in FIGS. 4A and 4B, the first key 6 has an inverted trapezoidal shape having an upper surface 6a and a lower surface 6b1 parallel to each other, and the upper surface 6a. That is, the convex surface portion 10 extending in the width direction is formed on the overlapping surface 6 a with the second key 7. The convex surface portion 10 is formed on a smooth surface parallel to the lower surface 6b1 and parallel to an inner bottom surface 8a1 of the first key groove 8 described later.

  As an example, the convex surface portion 10 is formed over the entire width of the overlapping surface 6a. A plurality of the convex surface portions 10 are formed on the overlapping surface 6a at equal intervals in the axial direction, and a plurality of concave surface portions 11 adjacent to the respective convex surface portions 10 in the axial direction and extending in the width direction are formed at equal intervals. That is, the convex surface portion 10 and the concave surface portion 11 are formed so as to be alternated.

  The first key 6 has a lower surface 6b1 and an outer inclined surface 6b2, that is, an outer surface 6b that comes into pressure contact with an inner surface 8a (inner bottom surface 8a1, inner inclined surface 8a2) of the first key groove 8 to be described later. In order to facilitate the process, no uneven surface is formed.

  Further, the first key 6 abuts on the inner end surface of the accommodating portion 14 of the second key 7 to be described later at the rear end portion (left end portion in FIG. 4A) and moves the first key 6 in the axial direction (to the right side in FIG. 4A). A stopper 15 for restricting movement is formed.

  Further, as shown in FIGS. 5A and 5B, the second key 7 according to the present embodiment has a trapezoidal shape having an upper surface 7b1 and a lower surface 7a parallel to each other, and the lower surface 7a, that is, the overlapping surface 7a with the first key 6. A convex surface portion 12 extending in the width direction is formed. The convex surface portion 12 is formed on a smooth surface parallel to the upper surface 7b1 and parallel to an inner top surface 9a1 of the second key groove 9 described later.

  As an example, the convex surface portion 12 is formed over the entire width of the overlapping surface 7a. A plurality of convex surface portions 12 are formed at equal intervals in the axial direction on the overlapping surface 7a, and a plurality of concave surface portions 13 adjacent to the respective convex surface portions 12 in the axial direction and extending in the width direction are formed at equal intervals. That is, the convex surface portion 12 and the concave surface portion 13 are formed so as to be alternated.

  Further, the upper surface 7b1 and the outer slope 7b2 of the second key 7, that is, the outer surface 7b pressed against the inner face 9a (the inner top face 9b1 and the inner slope 9b2) of the second key groove 9 described later are not particularly formed with uneven surfaces, and The outer surface 7b is formed of a metal plate 19 such as an iron plate, for example, to suppress wear of the outer surface 7b and improve durability.

  Further, the tip of the second key 7 (the right end in FIG. 5A) is engaged with the opening edge of the central hole 4a of the cylindrical brush body 4, and the second key 7 is moved in the axial direction (moving to the left in FIG. 5A). ) Is formed, and a receiving portion 14 for receiving the stopper 15 of the first key 6 is formed at the rear end portion (left end portion in FIG. 5A).

  In FIGS. 4A and 5A, reference numerals 17 and 18 denote guide surface portions for smoothly riding the convex surface portion 12 of the second key 7 on the convex surface portion 10 of the first key 6 described later.

  As shown in FIGS. 1 to 3, the first keyway 8 according to the present embodiment is formed in a cross-sectionally inverted trapezoidal shape extending in the axial direction on the outer peripheral surface of the shaft 5, and is formed on the outer peripheral surface of the shaft 5. A plurality (three at the same angle in the present embodiment) are formed at equal intervals in the circumferential direction, and an inner surface 8a having a shape similar to the outer surface 6b of the first key 6 is formed. The inner surface 8a includes an inner bottom surface 8a1 corresponding to the lower surface 6b1 of the first key 6 and an inner inclined surface 8a2 corresponding to the outer inclined surface 6b2 of the first key 6.

  Further, as shown in FIGS. 1 to 3, the second key groove 9 according to the present embodiment has an axis line on the inner peripheral surface of the central hole 4 a of the cylindrical brush body 4 at the cutout portion 1 b of the annular disk 1. A plurality of trapezoids (three at equal angles in this embodiment) are formed on the inner peripheral surface of the central hole 4 at regular intervals in the circumferential direction.

  The second key groove 9 forms an inner surface 9a having a shape similar to the outer surface 7b of the second key 7. The inner surface 9a is the same as the inner top surface 9a1 corresponding to the upper surface 7b1 of the second key 7. 7 and the inner slope 9a2 corresponding to the outer slope 7b2.

  Further, a pair of retaining portions that protrude toward the groove edges of the second key groove 9 so as to keep the first key 6 and the second key 7 in a superposed state and prevent them from coming off in the radial direction. 9b is provided.

  Next, the key coupling structure by the first key 6 and the second key 7 and the first key groove 8 and the second key groove 9 will be described with reference to FIGS. 6A to 6C, 7A, and 7B.

  6A to 6C show a state in which the first key 6 and the second key 7 are inserted into the first key groove 8 and the second key groove 9 in a superposed state, respectively. FIG. 7A shows the relationship between each key and each key groove in the overlapped state of FIGS. 6A and 6C, and FIG. 7B is a cross-sectional view showing the relationship between each key and each key groove in the overlapped state of FIG. 6B.

  As shown in FIG. 1, first, the cylindrical brush body 4 is extrapolated to the shaft 5 through a central hole 4a, and the first key groove 8 and the cylindrical brush body on the outer peripheral surface of the shaft 5 are inserted. The second key groove 9 on the inner peripheral surface of the center hole 4a of the 4 is made to coincide with each other to position them.

  At this time, as shown in FIGS. 6A and 7A, the first and second keys 6 are in a superposed state in which the convex surface portion 12 of the second key 7 does not ride on the convex surface portion 10 of the first key 6. , 7 are inserted into the second key groove 9 and held by the retaining portion 9b of the second key groove 9, and the exposed portion of the outer surface 6b of the first key 6 is kept in the first key groove in this state. 8 is inserted.

  In other words, in a state where the concave surface portion 11 of the first key 6 and the convex surface portion 12 of the second key 7, the convex surface portion 10 of the first key 6 and the concave surface portion 13 of the second key 7 are overlapped, The overlapping surface 6a of the first key 6 and a part of the outer slope 6b2 and the entire second key 7 are inserted into the second key groove 9, and the stopper 16 at the tip of the second key 7 is inserted into the cylindrical shape. The process is performed until the central hole 4a of the brush body 4 is penetrated, specifically, the second key groove 8 on the inner peripheral surface of the central hole 4a.

  In this superposed state, as described above, the convex surface portion 12 of the second key 7 does not ride on the convex surface portion 10 of the first key 6, and the superposition height h1 of the first and second keys 6 and 7 is the above. The first and second key grooves 8 and 9 are slightly lower than the height in the radial direction.

  Therefore, the outer surface 6b of the first key 6 is not pressed against the inner surface 8a of the first key groove 8, and similarly, the outer surface 7b of the second key 7 is pressed against the inner surface 9a of the second key groove 9. However, both the keys 6 and 7 can be freely inserted into and removed from the first and second key grooves 8 and 9 while being in a superposed state. Further, the retaining portion 9b of the second key groove 9 can be securely inserted and removed while maintaining the overlapped state of the keys 6 and 7.

  Next, as shown in FIGS. 6B and 7B, the first key 6 and the second key 7 are relatively slid in the axial direction, that is, in the present embodiment, the first key 6 is moved forward (to the right in FIG. 6). ), The convex surface portion 12 of the second key 7 rides on the convex surface portion 10 of the first key 6 and the keys 6 and 7 overlap in the radial direction. During this riding, smooth riding is ensured by the guide surface portions 17 and 18 formed on the first and second keys 6 and 7, respectively.

  In this superposed state, since the convex portion 12 of the second key 7 rides on the convex portion 10 of the first key 6 and is in surface contact with each other in parallel as described above, the first, second keys 6, 7 The superposition height h2 of the first key 6 is bulkier than the superposition height h1, so that the outer surface 6b of the first key 6 is pressed against the inner surface 8a of the first key groove 8 and the outer surface 7b of the second key 7 Is in pressure contact with the inner surface 9 a of the second key groove 9.

  More specifically, the lower surface 6b1 constituting the outer surface 6b of the first key 6 and the inner bottom surface 8a1 constituting the inner surface 8a of the first key groove 8 are in strong pressure contact, and the upper surface constituting the outer surface 7b of the second key 7. 7b1 and the inner top surface 9a1 constituting the inner surface 9a of the second key groove 9 are in strong pressure contact.

  For this reason, the cylindrical brush body 4 and the shaft 5 can be appropriately key-coupled, and at the same time, the cylindrical brush body 4 can be fastened and externally mounted on the shaft 5. It can be rotated for use.

  In addition, even if the first and second key grooves 8 and 9 are displaced from the normal position in the circumferential direction due to manufacturing errors or repeated use of the cylindrical brush body 4, the overlapping surface 6a ( It can be absorbed by the relative adjustment in the circumferential direction of the convex surface portion 10) and the overlapping surface 7a (convex surface portion 12) of the second key 7 to ensure reliable key coupling.

  6B and 7B, the stopper 15 of the first key 6 comes into contact with the inner end surface of the accommodating portion 14 of the second key 7, and together with the stopper 16 of the second key 7, the first The movement of the first and second keys 6 and 7 in the axial direction is reliably restricted, and the overlapping state of the convex portions 10 and 12 of both the keys 6 and 7 is maintained.

  FIG. 6C shows the superposition state of the first and second keys 6 and 7 when the cylindrical brush body 4 is detached from the shaft 5.

  In this state, the first key 6 is forcibly pushed in from the overlapped state shown in FIGS. 6B and 7B to move forward (move in the right direction in FIG. 6) to stop the first key 6. 15 shows a state in which 15 is forcibly broken.

  As a result, the convex surface portion 12 of the second key 7 gets over the convex surface portion 10 of the first key 6, and the concave surface portion 11 of the first key 6, the convex surface portion 12 of the second key 7, and the first key again. 6 and the concave surface portion 13 of the second key 7 are superposed, the superposition height h1 of the first and second keys 6 and 7 is set to be the first and second keys 6 and 7 are The cylindrical brush body 4 can be removed from the shaft 5 so that it can be extracted from the second key grooves 8 and 9.

  FIG. 8 shows another example of the second key 7 and the second key groove 9 in this embodiment.

  In the example of FIG. 8A, an example is shown in which the protruding corner portion of the outer surface 7 b of the second key 7 and the entering corner portion of the inner surface of the second key groove 9 are chamfered into a curved shape. In the example of 8B, an example is shown in which the protruding corner portion of the outer surface 7b of the second key 7 and the entering corner portion of the inner surface of the second key groove 9 are chamfered in a planar shape.

  Of course, the examples shown in FIGS. 8A and 8B are the same in the basic polymerization configuration and the bulky configuration, but the first and second keys 6 and 7 have the first and second keys by the chamfering. The insertion and removal of the key grooves 8 and 9 can be facilitated, and the outer surface 7b of the second key 7 can be reliably pressed against the inner surface 9a of the second key groove 9 without a gap.

  9A to 9C, FIG. 10A, and FIG. 10B define a gap 24A between the lower surface 6b1 of the first key 6 and the inner bottom surface 8a1 of the first key groove 8, and the upper surface 7b1 of the second key 7 and the second key 7a. An example is shown in which a gap 24B is defined between the inner top surfaces 9a1 of the grooves 9 to be key-coupled.

  The overlapping state of the first key 6 and the second key 7 in FIGS. 9A to 9C, 10A, and 10B and the insertion / removal method are the first key 6 and the second key in FIGS. 6A to 6C, 7A, and 7B. 7 is the same as the superposition state and insertion / extraction method of FIG. 7, and the description in FIGS. 6A to 6C, FIG. 7A, and FIG.

  6A to 6C, 7A, and 7B are different from each other in that a relief portion 8b is formed in the first key groove 8 and a relief portion 9c is formed in the second key groove 9 as shown in FIGS. 9A and 10A. 9B and 10B, a clearance 24A is formed between the lower surface 6b1 of the first key 6 and the inner bottom surface 8a1 of the first key groove 8 at the escape portion 8b when the key is coupled, and the escape portion 9c, a clearance 24B is formed between the upper surface 7b1 of the second key 7 and the inner top surface 9a1 of the second key groove 9.

  That is, in the overlapped state of the first and second keys 6 and 7 shown in FIGS. 9B and 10B, the convex surface portion 12 of the second key 7 rides on the convex surface portion 10 of the first key 6 as described above. The superposition height h2 of the first and second keys 6 and 7 is higher than the superposition height h1, so that the outer surface 6b of the first key 6 is pressed against the inner surface 8a of the first key groove 8. At the same time, the outer surface 7 b of the second key 7 is in pressure contact with the inner surface 9 a of the second key groove 9.

  More specifically, the outer slope 6b2 constituting the outer surface 6b of the first key 6 and the inner slope 8a2 constituting the inner surface 8a of the first key groove 8 are strongly pressed in an optimum position by the gap 24A, and the gap 24B The outer inclined surface 7b2 constituting the outer surface 7b of the second key 7 and the inner inclined surface 9a2 constituting the inner surface 9a of the second key groove 9 are strongly pressed at the optimum position.

  For this reason, the cylindrical brush body 4 and the shaft 5 can be appropriately key-coupled, and at the same time, the cylindrical brush body 4 can be fastened and externally mounted on the shaft 5. It can be rotated and used for use.

  In addition, even if the first and second key grooves 8 and 9 are displaced from the normal position in the circumferential direction due to manufacturing errors or repeated use of the cylindrical brush body 4, the overlapping surface 6a ( It can be absorbed by the relative adjustment in the circumferential direction of the convex surface portion 10) and the overlapping surface 7a (convex surface portion 12) of the second key 7 to ensure reliable key coupling.

  Note that the present invention is not limited to the case where both the play 24A and the play 24B are formed and key-linked, and the case where only the play 24A or only the play 24B is formed and key-connected is not excluded.

<< Example 2 >>
In the keyed brush roll according to the second embodiment of the present invention, as shown in FIGS. 14A and 14B, the first key 6 has a rectangular cross-section, and its upper surface, that is, the overlapping surface with the second key 7. A first inclined surface portion 20 that inclines upward toward the tip (the right end in FIG. 14A) is formed on 6a. As an example, the first inclined surface portion 20 is formed over the entire length of the overlapping surface 6a in the axial direction. That is, the first key 6 is formed so as to gradually become taller toward the tip, thereby forming the first inclined surface portion 20.

  On the other hand, the lower surface 6b1 and the outer surface 6b2 of the first key 6, that is, the outer surface 6b that is in pressure contact with the inner surface 8a of the first key groove 8 described later are formed in a planar shape.

  Further, a protrusion 22 capable of pressing the rear end of another first key 6 adjacent in the axial direction is formed at the front end of the first key 6 (the right end in FIG. 14A).

  As shown in FIGS. 15A and 15B, the second key 7 according to the present embodiment has a rectangular cross section, and the lower surface thereof, that is, the overlapping surface 7a with the first key 6 is opposite to the first inclined surface portion 20. A second inclined surface portion 21 inclined in the direction is formed, and as an example, the second inclined surface portion 21 is formed over the entire length of the overlapping surface 7a in the axial direction. That is, the second key 7 is formed so as to gradually become lower in height toward the tip, and forms a second inclined surface portion 21 that slopes downward toward the tip.

  On the other hand, the upper surface 7b1 and the outer surface 7b2 of the second key 7, that is, the outer surface 7b in pressure contact with the inner surface 9a of the second key groove 9 to be described later are formed in a planar shape.

  Further, as shown in FIGS. 15A and 15B, the axial direction of the central hole 4a of the cylindrical brush body 4 at the front end portion (the right end portion in FIG. 15A) and the rear end portion (the left end portion in FIG. 15A) of the second key 7 It has a configuration in which a locking portion 23 is provided as a means for locking to both end edges of the second key 7 and preventing the second key 7 from falling off the second key groove 9 described later.

  The locking portion 23 also functions as stopper means for restricting movement of the second key 7 in the axial direction (movement to the left and right sides in FIG. 15A).

  As shown in FIGS. 11 to 13, the first keyway 8 according to the present embodiment is formed to extend in the axial direction on the outer peripheral surface of the shaft 5, and the like in the circumferential direction on the outer peripheral surface of the shaft 5. A plurality (three at the same angle in this embodiment) are formed at intervals, and an inner surface 8a corresponding to the outer surface 6b of the first key 6 is formed.

  Further, as shown in FIGS. 11 to 13, the second key groove 9 according to the present embodiment has an axial line on the inner peripheral surface of the central hole 4 a of the cylindrical brush body 4 at the cutout portion 1 b of the annular disk 1. A plurality of (three at equal angles in this embodiment) are formed on the inner peripheral surface of the central hole 4 at regular intervals in the circumferential direction, and the outer surface 7b of the second key 7 A corresponding inner surface 9a is formed.

  Next, a key coupling structure using the first key 6 and the second key 7 and the first key groove 8 and the second key groove 9 according to the present embodiment will be described with reference to FIGS. 16A and 16B, FIG. 17A and FIG. 17B. .

  16A and 16B show the overlapping of the first key 6 and the second key 7 with the first key 6 and the second key 7 inserted into the first key groove 8 and the second key groove 9, respectively. Indicates the state. FIGS. 17A and 17B are cross-sectional views showing the relationship between each key and each key groove in the overlapped state of FIGS. 16A and 16B, respectively.

  First, the second key 7 is inserted into the second key groove 9 of the cylindrical brush body 4, and the second key 7 is attached to the cylindrical brush body 4 by both engaging portions 23 of the second key 7. Let it be in a state of attachment.

In this state, the cylindrical brush body 4 is extrapolated to the shaft 5 through the central hole 4a.
The first key 6 is made to wait in advance in the first key groove 8 of the shaft 5, and as shown in FIGS. 16A and 17A, the second inclined surface portion 21 of the second key 7 is formed on the first key 6. A superposition state in which the first inclined surface portion 20 is not completely ridden is made.

  In this superposed state, as described above, the second inclined surface portion 21 of the second key 7 does not completely run over the first inclined surface portion 20 of the first key 6, and the first, second keys 6, 7 The superposition height h1 is slightly lower than the height of the first and second key grooves 8 and 9 in the radial direction.

  Therefore, the outer surface 6b of the first key 6 is not in pressure contact with the inner surface 8a of the first key groove 8, and similarly, the outer surface 7b of the second key 7 is in pressure contact with the inner surface 9a of the second key groove 9. However, the cylindrical brush body 4 to which the first key 6 is attached is in a state of being freely movable in the axial direction.

  Next, as shown in FIGS. 16B and 17B, the first key 6 and the second key 7 are relatively slid in the axial direction, that is, in this embodiment, the second key 7 is moved forward (to the right in FIG. 16). ), The second inclined surface portion 21 of the second key 7 completely rides on the first inclined surface portion 20 of the first key 6 and the keys 6 and 7 overlap in the radial direction.

  In this superposed state, as described above, the second inclined surface portion 21 of the second key 7 has completely ridden on the first inclined surface portion 20 of the first key 6. The superposition height h2 is bulkier than the superposition height h1, so that the outer surface 6b of the first key 6 is in pressure contact with the inner surface 8a of the first key groove 8, and the outer surface 7b of the second key 7 is The inner surface 9a of the second key groove 9 is in pressure contact.

  More specifically, the lower surface 6b1 constituting the outer surface 6b of the first key 6 and the inner bottom surface 8a1 constituting the inner surface 8a of the first key groove 8 are in strong pressure contact, and the upper surface constituting the outer surface 7b of the second key 7. 7b1 and the inner top surface 9a1 constituting the inner surface 9a of the second key groove 9 are in strong pressure contact.

  For this reason, the cylindrical brush body 4 and the shaft 5 can be appropriately key-coupled, and at the same time, the cylindrical brush body 4 can be fastened and externally mounted on the shaft 5. It can be rotated for use.

  In addition, even if the first and second key grooves 8 and 9 are displaced from the normal position in the circumferential direction due to manufacturing errors or repeated use of the cylindrical brush body 4, the overlapping surface 6a ( The first inclined surface portion 20) and the overlapping surface 7a (second inclined surface portion 21) of the second key 7 can be absorbed by the relative adjustment in the circumferential direction, thereby assuring a reliable key connection.

  Further, when removing the cylindrical brush body 4 from the shaft 5, if the rear end of the first key 6 is forcibly pressed and moved forward (moved to the right in FIG. 16), the first and second The two keys 6 and 7 are again in the superposed state of FIG. 16A, and the cylindrical brush body 4 can be easily detached from the shaft 5.

  At this time, when another cylindrical brush body 4 is key-coupled to the shaft 5 adjacent to the distal end side of the cylindrical brush body 4, the projection 22 at the distal end of the first key 6 is Since the rear end portion of the first key 6 to which the cylindrical brush body 4 is key-connected is pressed, the key connection with the shaft 5 of the plurality of cylindrical brush bodies 4 can be simultaneously released.

  It should be noted that the outer surface shapes of the first key 6 and the second key 7 according to the present embodiment are respectively formed in the same outer surface shape (reverse trapezoidal shape, trapezoidal shape) as the first key 6 and the second key 7 according to the first embodiment. Is also optional depending on implementation. Further, the inner surface shapes of the first key groove 8 and the second key groove 9 according to the present embodiment are the same inner surface shapes as the first key groove 8 and the second key groove 9 according to the first embodiment (reverse trapezoidal shape in section, cross section). It is optional depending on the implementation.

  Further, it is not excluded to form the outer surface 7b of the second key 7 according to the present embodiment with the metal plate 19 in the same manner as the outer surface 7b of the second key 7 according to the first embodiment.

  Finally, FIGS. 18A and 18B show examples in which the friction reducing groove 25 extending in the axial direction is formed on the overlapping surface 6a of the first key 6 in the first and second embodiments.

  The friction reduction groove 25 reduces the contact area between the overlapping surface 6a of the first key 6 and the overlapping surface 7a of the second key 7, and friction in relative sliding in the axial direction of the first and second keys 6 and 7 is achieved. The above-described smooth relative sliding can be realized. In the present invention, the present invention is not limited to the case of each of the above examples, and the case where the friction reducing groove 25 is formed on the overlapping surface 7a of the second key 7 is not excluded.

DESCRIPTION OF SYMBOLS 1 ... Ring disk, 1a ... Center hole, 1b ... Notch part, 2 ... Brush bundle, 3 ... Ring disk brush, 4 ... Cylindrical brush body, 4a ... Center hole, 5 ... Shaft, 6 ... First key, 6a ... first key overlapping surface, 6b ... first key outer surface, 6b1 ... first key lower surface, 6b2 ... first key outer slope, outer surface, 7 ... second key, 7a ... second key overlapping surface 7b ... outer surface of the second key, 7b1 ... upper surface of the second key, 7b2 ... outer slope and outer surface of the second key, 8 ... first key groove, 8a ... inner surface of the first key groove, 8a1 ... first key Inner bottom surface of groove, 8a2 ... Inner slope and inner surface of first key groove, 8b ... Escape portion of first key groove, 9 ... Second key groove, 9a ... Inner surface of second key groove, 9a1 ... Second key groove The inner top surface, 9a2 ... the inner slope of the second keyway, the inner side surface, 9b ... the retaining part, 9c ... the second keyway relief part, 10 ... the first -Convex surface portion, 11 ... concave surface portion of the first key, 12 ... convex surface portion of the second key, 13 ... concave surface portion of the second key, 14 ... accommodating portion, 15 ... stopper, 16 ... stopper, 17 ... first key Guide surface portion, 18 ... Guide surface portion of second key, 19 ... Metal plate, 20 ... First inclined surface portion, 21 ... Second inclined surface portion, 22 ... Projection portion, 23 ... Locking portion, 24A, 24B ... Play gap, 25 ... Friction reduction grooves, h1, h2 ... polymerization height in the radial direction of the first key and the second key.

Claims (4)

In a brush roll in which a plurality of annular disk brushes are externally attached to a shaft through a central hole, two pairs of first and second keys are used as means for key coupling the plurality of annular disk brushes to the shaft. The first key is inserted into a first key groove formed on the outer peripheral surface of the shaft, and the second key is formed on the inner peripheral surface of the central hole of each annular disk brush. Inserted into the two-key groove, the first and second keys can slide relative to each other in the axial direction while overlapping with each other in the inserted state, and are formed on the overlapping surface of the first key by the relative sliding. The convex portion formed on the superposed surface of the second key rides on the convex portion so that the superposed height in the radial direction of the first and second keys is bulky, and the outer surface of the first key is formed on the first key groove. And press contact with the inner surface of the The outer surface of the key has a configuration to achieve pressure above keyed to an inner surface of the second key groove, and the first key groove into inverted trapezoidal shape as well as the first key to the inverted trapezoidal shape, the first key The outer slope that forms the outer surface of the first key groove and the inner slope that constitutes the inner surface of the first key groove are pressed together, and there is a gap between the lower surface that constitutes the outer surface of the first key and the inner bottom surface that constitutes the inner surface of the first key groove. A keyed brush roll characterized by forming a key to achieve the key combination . In a brush roll in which a plurality of annular disk brushes are externally attached to a shaft through a central hole, two pairs of first and second keys are used as means for key coupling the plurality of annular disk brushes to the shaft. The first key is inserted into a first key groove formed on the outer peripheral surface of the shaft, and the second key is formed on the inner peripheral surface of the central hole of each annular disk brush. Inserted into the two-key groove, the first and second keys can slide relative to each other in the axial direction while overlapping with each other in the inserted state, and are formed on the overlapping surface of the first key by the relative sliding. The second inclined surface portion inclined in the opposite direction to the first inclined surface portion formed on the overlapping surface of the second key rides on the first inclined surface portion inclined in the axial direction, and the radial direction of the first and second keys Polymerization height in Was bulky, the outer surface of the first key has a configuration to achieve an outer surface of the pressure contact with the key coupled to the inner surface of the second key groove of the second key while pressing the inner surface of the first key groove, the The first key is shaped like an inverted trapezoid and the first keyway is shaped like an inverted trapezoid, and the outer slope that constitutes the outer surface of the first key and the inner slope that constitutes the inner surface of the first keyway are pressed together. A brush roll with a key , wherein a gap is formed between a lower surface constituting the outer surface of the first key and an inner bottom surface constituting the inner surface of the first key groove to achieve the key combination .   3. The key combination according to claim 1, wherein an upper surface constituting the outer surface of the second key and an inner top surface constituting the inner surface of the second key groove are pressed to achieve the key combination. Keyed brush roll.   The second key is trapezoidal and the second keyway is trapezoidal, and the outer slope that forms the outer surface of the second key and the inner slope that forms the inner surface of the second keyway are pressed against each other. 3. The key connection is achieved by forming a gap between the upper surface constituting the outer surface of the two keys and the inner top surface constituting the inner surface of the second key groove. Keyed brush roll as described.

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