JP2007191115A - Bracket holding stand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a still state of a bracket to be easily realized when a steering shaft is press fitted into a bracket through a press-fitting process and prevent the disadvantage that the steering shaft is connected to the bracket in its inclination. <P>SOLUTION: This bracket holding stand has a central table 11 where the central part of a bracket 2 is abutted against end surfaces in parallel with a reference plane 5a, a pair of both stands 12 where each of both sides 22 at the bracket 2 is abutted against each of the end surfaces having the same height positions while being similarly in parallel with the reference plane 5a, and guide portions 13 each of which protrudes at the end surfaces in the pair of both side stands 12 to enable a separable connection to fork connection portions 23 formed at both sides 22 of the bracket 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bracket holding base, and in particular, a bracket holding used when a steering shaft is connected by a press-fit method to a bracket that holds a front fork mounted on the front wheel side of a two-wheeled vehicle as a pair on the left and right sides. About the stand.

  In a front fork called a pine needle type mounted on the front wheel side of a bicycle, for example, a two-wheeled vehicle, the steering shaft is located at the center of the bracket that connects the upper ends of a pair of front forks that hold the front wheels at the lower ends. The steering shaft is inserted into the inside of the head pipe that forms the front end of the bicycle body, so that the pine needle-type front fork in the horizontal direction relative to the vehicle body on the front wheel side of the bicycle The swinging is enabled, that is, the front wheel of the bicycle can be steered.

  On the other hand, in a front fork mounted on the front wheel side of a motorcycle even in the same motorcycle, for example, as disclosed in Patent Document 1, the upper end sides of a pair of front forks that hold the front wheel at the lower end are vertically The upper bracket and the under bracket are connected in parallel to each other.

  A pair of front forks is automatically installed by inserting the steering shaft, which is fixedly placed between the upper bracket and the under bracket, into the inside of the head pipe that forms the front end of the motorcycle body. The front wheel side of the motorcycle is allowed to swing in the horizontal direction with respect to the vehicle body, that is, as described above, the front wheels of the motorcycle can be steered.

  By the way, the above-described steering shaft is erected in a fixed state in a mountain portion which is not a side portion but a central portion when the bracket has a mountain shape as disclosed in Patent Document 1, for example. However, the standing of the steering shaft in a fixed state is based on the cold fitting method in Patent Document 1 described above.

  And according to the place indicated by the above-mentioned patent documents 1, the bracket by which a steering shaft stands upright with a cold fitting method is used when mounting a front fork on the front wheel side of a motorcycle. The upper bracket of the steering shaft is integrally connected to the upper upper bracket under a fixed structure using a nut.

  Therefore, according to the place disclosed in Patent Document 1, so long as the steering shaft is connected to the under bracket so as not to be inclined, so that the parallelism between the upper bracket and the under bracket is ensured. Thus, it is possible to prevent the upper bracket and the under bracket from being connected to the upper end of the pair of front forks in a so-called inclined state.

By the way, when the steering shaft is tilted and connected to the under bracket that connects the upper end side of the pair of front forks on the left and right, therefore, when parallelism is not guaranteed between the upper bracket and the under bracket, As a result, the lower end side of the front fork becomes different in distance from the upper end side to the center of the front fork, which causes problems such as the inability to connect the front wheel axle to the lower end portion of the front fork.
Japanese Utility Model Publication No. 53-134362 (refer to description on page 4, lines 7 to 16 and FIG. 1)

  However, in the proposal disclosed in Patent Document 1 described above, there is no problem in connecting the steering shaft vertically without tilting to the bracket by the cold fitting method, but the cold fitting method is not used. In practice, it may be pointed out that there is a minor defect.

  In other words, the cold fitting method, as is well known, heats the bracket to expand the hole for fitting the steering shaft, while cooling the steering shaft to reduce the diameter of the fitting portion. It is assumed that the steering shaft is fitted into the bracket, and the two are firmly connected by returning to normal temperature (about 20 ° C.).

  Therefore, not only the heating equipment for the steering shaft and the cooling equipment for the bracket are required, but also the temperature control of both is essential, and when viewed as a whole, the cold fitting method requires a lot of cost. It can be said that there is a problem that will be.

  Therefore, in place of this cold-fitting method, a press-fitting method in which the steering shaft is press-fitted into the hole opened in the bracket at room temperature to integrate both in a fixed state is recommended.

  However, the load when the steering shaft is press-fitted in this press-fitting method is greatly doubled compared to the load when the steering shaft is fitted in the cold fitting method.

  Therefore, in order to prevent the bracket from swinging when the steering shaft is press-fitted into the bracket so that the steering shaft is tilted and not connected to the bracket, the stationary state of the bracket is absolutely guaranteed when the steering shaft is press-fitted. It is necessary to

  The present invention was created in view of the above-described circumstances, and the object of the present invention is to make it possible to easily realize the stationary state of the bracket when the steering shaft is press-fitted into the bracket by a press-fitting method. An object of the present invention is to provide a bracket holding stand that is optimal for expecting an improvement in its versatility by eliminating the occurrence of defective products in which the steering shaft is inclined and connected to the bracket.

  In order to achieve the above-described object, the structure of the bracket holding base according to the present invention basically includes a central base portion that abuts the central portion of the bracket on an end surface parallel to the reference surface, and is also parallel to the reference surface. However, a pair of both side pedestals that respectively abut both sides of the bracket on the end surfaces at the same height, and a fork formed on each side of the bracket that protrudes from the end surfaces of the pair of both side pedestals. Suppose that it has a guide part which enables separation connection to a connection part.

  Therefore, in the present invention, when the steering shaft is press-fitted into the bracket by the press-fitting method, the bracket holding base holds the bracket in a so-called three-point support state, so that the bracket can be easily kept stationary. Even if the steering shaft is press-fitted into the bracket with a load that is greatly doubled compared to the load in the case of the cold fitting method, the bracket does not oscillate, so the steering shaft tilts so-called It is possible to avoid the inconvenience of defects connected to the bracket.

  The present invention will be described below on the basis of the illustrated embodiment. A bracket holding base 1 (see FIG. 4) according to the present invention includes a bracket 2 shown in FIG. 1 and a steering shaft 3 as shown in FIG. Are connected in a fixed state, that is, used for connection.

  Here, the bracket 2 shown in FIG. 1 will be described briefly. First, a traditional iron material is selected as a material. In recent years, an aluminum material is used from the viewpoint of reducing the weight of the steering mechanism on the front wheel side of the motorcycle. Selected.

  When the bracket 2 is oriented toward a front fork called a pine needle type mounted mainly on the front wheel side of a bicycle as a two-wheeled vehicle, it corresponds to a so-called single-sheet type, and the bracket 2 is automatically When the front fork F (see FIG. 3) is mounted on the front wheel side of the two-wheeled vehicle, a pair of upper and lower specifications is used, and it is arranged below the upper bracket 4 (see FIG. 3). The under bracket is equivalent.

  Further, the bracket 2 has a shaft press-fitting hole 21 for press-fitting the proximal end portion of the steering shaft 3 at the center portion, and has fork connecting portions 23 on both side portions 22 which are left and right portions in the drawing. Yes.

  The shaft press-fitting hole 21 does not allow natural insertion of the proximal end portion of the steering shaft 3 into the shaft press-fitting hole 21, that is, the base end portion of the steering shaft 3 aimed at the shaft press-fitting hole 21 is, for example, an operator Is set so as not to be inserted into the shaft press-fitting hole 21 only by being pushed by human power.

  That is, according to the present invention, the bracket holding stand 1 used when the steering shaft 3 is connected to the bracket 2 by the press-fitting method is provided. According to the press-fitting method, the shaft press-fitting hole 21 is It is set so as to allow press-fitting of the proximal end portion of the steering shaft 3 only under the action of a load obtained by the machine.

  And when the fork connecting part 23 is the one-piece specification of the bracket 2 described above, it is often assumed that the fork connecting part 23 is composed of a recessed part that connects the upper end of the front fork so as to be immersed. Of course, it may be made of a hole that penetrates the upper end portion of the front fork, that is, a hole that penetrates the both side portions 22 of the bracket 2 in the thickness direction.

  When the fork connecting portion 23 is formed of a concave portion in the single-sheet bracket 2, the upper end portion of the front fork immersed in the concave portion is often welded to the bracket 2 to be connected in a fixed state. Of course, even if the fork connecting portion 23 is formed of a hole, the upper end portion of the front fork may be welded to the bracket 2 and connected in a fixed state.

  Further, the fork connecting portion 23 is formed of a hole that penetrates the upper end side of the front fork F when the bracket 2 is an under bracket when the bracket 2 is of the above-described two-sheet specification.

  The hole as the fork connecting portion 23 may in principle be a fixed hole and the diameter may be unchanged. In many cases, however, the diameter can be reduced by, for example, having a split 23a. It would be common to be formed.

  Further, in the case where the split 23a is provided so that the diameter can be reduced, it is assumed that the diameter is reduced by using the bolt nut or by tightening the bolt, and the front fork F is in the reduced diameter state. It is assumed that the upper end side of the head is held.

  Incidentally, when the front fork F is set upright with the large-diameter outer tube as the lower end member and the small-diameter inner tube as the upper end member, the upper end side of the small-diameter inner tube penetrates. The fork connecting portion 23 having a diameter hole is opened on both side portions 22 of the bracket 2, and the front fork F is set to an inverted type in which a small diameter inner tube is a lower end side member and a large diameter outer tube is an upper end side member. In this case, it goes without saying that the fork connecting portion 23 formed of a hole having a diameter through which the upper end side of the large-diameter outer tube passes is opened at both side portions 22 of the bracket 2.

  On the other hand, as to the plan view shape of the bracket 2, as shown in FIG. 1, the line connecting the center of the center shaft press-fitting hole 21 and the recesses or the centers of the fork connecting portions 23 on both sides has a V-shape. In addition, it may be formed so as to exhibit an inverted V shape or a straight line shape.

  By the way, as shown in FIG. 3, the front fork F as a hydraulic shock absorber that absorbs road surface vibrations input to the front wheels T in a motorcycle is paired on the left and right, and the under bracket as the bracket 2 described above and A state is shown in which the vehicle is mounted on the front wheel side of the motorcycle under the use of the upper bracket 4 disposed above.

  At this time, the upper bracket 4 is connected to the steering shaft 3 connected in a fixed state to the under bracket in a fixed structure using the nut 31, and is parallel to the under bracket vertically. Accordingly, the front fork F that is paired on the left and right sides with the upper end held by the upper bracket 4 and the under bracket basically has the same center-to-center distance between the lower end and the upper end. Therefore, the connection of the front wheel T to the lower end can be realized without any obstacle.

  Next, as shown in FIG. 2, the steering shaft 3 has a base end portion which is a lower end portion in the drawing and is press-fitted into a shaft press-fitting hole 21 formed in the central portion of the bracket 2. The press-fitting allowance between the base end portion 3 and the shaft press-fitting hole 21 is, for example, about 100 microns when the bracket 2 is made of, for example, an aluminum material.

  Therefore, when the steering shaft 3 is press-fitted into the shaft press-fitting hole 21 of the bracket 2, the lower end of the steering shaft 3 inserted into the shaft press-fitting hole 21 from the front end side which is the upper end side in the figure is shown. The jig is brought into contact with the end, that is, abutted, and the steering shaft 3 is pushed forward by an external force from the jig acting in the axial direction of the steering shaft 3 from this state, and the base end portion of the steering shaft 3 is moved into the shaft press-fitting hole 21. By forcibly inserting, a strong connection state between the two, that is, a fixed state is realized.

  At this time, it is assumed that the proximal end of the steering shaft 3 protrudes from the shaft press-fitting hole 21 (see FIG. 4), and the stopper ring 32 is interposed in the protruding portion, so that the proximal end portion of the steering shaft 3 becomes the shaft. It is supposed that the drop-out is prevented from penetrating through the press-fitting hole 21 in FIG.

  When the bracket 2 and the steering shaft 3 are formed as described above, the bracket holding base 1 according to the present invention includes a central base part 11, a pair of side base parts 12, and a guide part 13 as shown in FIG. It has.

  Incidentally, in the case shown in FIG. 4, the bracket 2 is an under bracket when the two brackets are used together with the upper bracket 4 described above, and the bracket 2 is a one when the brackets are one. Will be described only when necessary.

  4 shows a state in which the bracket 2 is placed on the bracket holding stand 1 in a state where the so-called upside down is inverted, that is, when the steering shaft 3 is connected to the bracket 2 by a press-fitting method. Therefore, the steering shaft 3 has its tip side directed downward, as shown in FIG.

  Under the above premise, first, the bracket holding base 1 has a central base part 11, a pair of both side base parts 12 and a guide part 13 described later, and the central base part 11 and the pair of both side base parts 12. In consideration of the fact that the bracket 5 is held or connected to the base 5 described later, and that the bracket holding base 1 functions, that is, the bracket 2 into which the steering shaft 3 is press-fitted is supported. It would normally be formed of, for example, an iron material so as to have a mechanical strength that does not unnecessarily deform due to the external force applied when the steering shaft 3 is press-fitted.

  In the bracket holding stand 1, as shown in the figure, the central base portion 11 and the pair of both side base portions 12 are connected to one base 5 that forms a reference surface. For example, it is assumed that it is composed of a work table installed in a fixed state, a moving table in an assembly line, and the like, and the reference surface is composed of an upper end surface 5a of the base 5.

  Further, in the bracket holding base 1, the central base part 11 and the pair of both side base parts 12 are illustrated in a state where the lower end is adjacent to the upper end surface 5a of the base 5 described above, that is, It is assumed that welding is performed under the contact state, but any method can be selected as long as the central base part 11 and the pair of both side base parts 12 are arranged in a fixed state on the upper end surface 5a of the base 5 it can.

  For example, the central base 11 and the pair of both side bases 12 may be held on the upper end surface 5a of the base 5 by screwing bolts from the base 5 side, or the lower end side may be on the upper end side of the base 5 It may be held integrally with the base 5 by being screwed, or may be formed integrally with the base 5.

  In view of the above, in this bracket holding base 1, when the pair of both side base parts 12 are separably screwed to the base 5 apart from the central base part 11, the bracket 2 has a larger dimension. In this case, there is an advantage that the bracket holding stand 1 can be diverted by exchanging the pair of both side pedestals 12 with ones having corresponding dimensions.

  Further, in the bracket holding base 1, the central base portion 11 makes the central portion of the bracket 2 abut on the upper end surface which is an end surface parallel to the upper end surface 5a of the base 5 which is a reference surface, that is, is placed. The pair of both side pedestal parts 12 are respectively arranged so that the both side parts 22 of the bracket 2 are brought into contact with, ie, placed on, the upper end surfaces that are the same height positions while being parallel to the upper end face 5a. Yes.

  At this time, as shown in the drawing, the height position from the reference surface of the upper end surface of the pair of both side pedestal parts 12 is slightly compared with the height position from the reference surface of the upper end surface of the central pedestal part 11, that is, For example, the value is lowered within a range of dimensions allowed as a manufacturing error.

  Thus, when the height of the pair of both side pedestals 12 is set to be lower than the height of the center pedestal 11 within the range of the size that is considered as a manufacturing error, this bracket holding stand 1 is advantageous in that precise dimensional management is not required and the product cost can be reduced.

  Not only that, when the height of the pair of both side pedestals 12 is set to be lower than the height of the center pedestal 11, the height of the pair of both pedestals 12 and the height of the central pedestal 11 are the same. This is advantageous in that the inclination of the bracket 2 due to a manufacturing error that will be invited when it is set to can be eliminated.

  Therefore, basically, in the bracket 2, when the bracket 2 is laid flat on a flat surface, the center portion having the shaft press-fitting hole 21 and the so-called heights of the both side portions 22 having the fork connecting portions 23 are provided. When the height of the pair of both side pedestal parts 12 and the height of the central pedestal part 11 are the same, the central part of the bracket 2 is The bracket 2 is placed on the central platform 11 and the both side portions 22 of the bracket 2 are placed on the pair of both platform portions 12, so that the bracket 2 is maintained in a horizontal state while being supported at three points. Therefore, as will be described later, the operation of pressing the steering shaft 3 vertically into the bracket 2 is facilitated.

  Incidentally, in the bracket holding stand 1, when the height of the central base portion 11 is formed to be lower than the height of the pair of both side base portions 12, the bracket 2 is distorted when the steering shaft 3 is press-fitted. There are fears and it cannot be said that it is a favorable choice.

  In the bracket holding stand 1, even if the height of the pair of both side pedestals 12 is lower than the height of the center pedestal 11 and has a size larger than the above manufacturing error, the pair of both pedestal portions When 12 has a guide portion 13 to be described later, that is, when it has a guide portion 13 that is connected to a fork connecting portion 23 formed on both side portions 22 of the bracket 2 by a light press-fitting operation, the vertical in the guide portion 13 is provided. As long as the degree is ensured with respect to the upper end surfaces of the pair of side base parts 12, the bracket 2 can be maintained in a parallel state. It can be said that there are no defects.

  By the way, in the bracket holding base 1, when the upper end surface 5a of the base 5 is used as a reference plane, the height of the central base 11 and the height of the pair of side bases 12 are the same or almost the same. Even when the both side portions 22 of the bracket 2 are placed on the pair of both side base portions 12 while the central portion of the bracket 2 is placed on the central base portion 11, the space between the bracket 2 and the base 5 below is placed. For example, it is preferable that a gap allowing the operator's palm to be inserted / removed can appear.

  By setting in this way, in this bracket holding stand 1, the bracket 2 is positioned with a gap above the base 5, so that the operator can attach the bracket 2 to the bracket holding stand 1. Workability when setting will be improved.

  That is, the operator places the center part of the bracket 2 on the center base part 11 of the bracket holding base 1 and places both side parts 22 of the bracket 2 on the pair of both side base parts 12 of the bracket holding base 1 by hand. In doing so, the operator's hand does not come into contact with other parts such as the upper end surface 5a of the base 5, and the workability is improved.

  In addition, the bracket holding base 1 has a pair of both side base parts 12 having a guide part 13 which will be described later, which is inserted into a hole which is a fork connecting part 23 formed on the both side parts 22 of the bracket 2. However, the bracket 2 is positioned with a gap above the base 5 so that the operator can insert the bracket 2 from the pair of side plates 12 with the hand inserted below the bracket 2, that is, holding the bracket. It is possible to remove the bracket 2 by pulling it up from the table 1, and the operator can easily realize the attachment / detachment operation of the bracket 2 including the above.

  On the other hand, regarding the mechanical strength of the central base part 11 and the pair of both side base parts 12 in the bracket holding base 1, in the drawing, both the central base part 11 and the pair of both side base parts 12 are thick tubes. It is said that it has the mechanical strength required to be formed in a shape.

  In other words, in the central platform 11, in view of applying an external force to press-fit the base end portion of the steering shaft 3 into the shaft press-fitting hole 21 of the bracket 2, the mechanical force is not easily deformed by this external force action. It is important to have strength.

  On the other hand, in the pair of both side pedestals 12, even when the base end portion of the steering shaft 3 is press-fitted into the shaft press-fitting hole 21 of the bracket 2 by the action of external force, the external force at that time hardly acts. It is not required to have the mechanical strength as high as that of the central base part 11, and therefore the pair of both side base parts 12 do not have to be formed in a thick cylindrical shape.

  In addition, in the present invention, in consideration of the fact that guide portions 13 described later connected to the pair of both side pedestal portions 12 are formed in a cylindrical shape, the pair of both side pedestal portions 12 themselves are continuously connected to the guide portions 13. It is advantageous to form in a cylindrical shape such as to reduce the overall weight of the bracket holding base 1 as compared to the case where the pair of both side base portions 12 are formed in a rod shape.

  By the way, the guide portion 13 is formed in a cylindrical shape on the upper end surface, which is an end surface of the pair of both side pedestal portions 12, and is projected from the fork connecting portion 23 formed on the both side portions 22 of the bracket 2. It is assumed that the separable connection to the hole, that is, the connection that can embody the insertion / removal to the hole that is the fork connecting part 23 is made possible.

  Incidentally, when the fork connecting portion 23 is formed of a concave portion, the protruding height of the guide portion 13 to be introduced into the concave portion, that is, the protruding height from the upper end surfaces of the pair of both side pedestal portions 12 is In many cases, it will be set to be lower than the case where it is formed so as to be inserted into the hole.

  Further, the guide portion 13 may protrude from the upper end surfaces of the pair of both side pedestal portions 12 in an arbitrary manner as long as the insertion / removal with respect to the hole or the concave portion as the fork connecting portion 23 can be realized.

  As shown in the figure, the guide portion 13 is integrally connected to the upper ends of the pair of both side pedestals 12, but instead, the lower end is the upper end of the pair of both pedestal portions 12. The lower end side may be welded to the upper end side of the pair of both side pedestal parts 12 so as to be integrated with the pair of both side pedestal parts 12. It may be retained.

  In view of the above, when the guide portion 13 is separably screwed to the upper end sides of the pair of side plate portions 12, the inner diameter of the fork connecting portion 23 formed on the bracket 2 is different. In this case, there is an advantage that the bracket holder 1 can be diverted by exchanging the guide portion 13 with a corresponding size.

  Next, the guide portion 13 is operated by light press-fitting operation, that is, by pressing the bracket 2 against the bracket holding base 1 with a force that does not allow the operator to put on his / her weight. It is assumed that it has a press-fitting allowance that is introduced into the concave portion as the connecting portion 23 or is inserted into the hole.

  That is, in this bracket holding stand 1, the main purpose is to maintain the bracket 2 in a parallel state with respect to the reference plane, that is, to hold the bracket 2 in a horizontal state when the reference plane is a horizontal plane. Therefore, it is not always necessary that the guide portion 13 is connected to the fork connecting portion 23 by light press-fitting operation. For example, when the steering shaft 3 is press-fitted into the bracket 2, the bracket 2 It can be said that it will be sufficient if it becomes possible to prevent the rotation of the lens horizontally.

  If so, the guide portion 13 has a plurality of splits 13a as shown in the figure, that is, the guide portion 13 is formed in a cylindrical shape from the upper end inserted into the hole serving as the fork connecting portion 23 in the both side pedestal portions 12. It has a plurality of splits 13a formed toward the lower end that is continuous with the upper end surface that is the end face, and the guide portion 13 is reduced in diameter when inserted into the hole. In view of the above, it can be said that it is not always necessary to reduce the diameter.

  On the other hand, in the guide portion 13, having the split 13 a is to keep the bracket 2 held by the bracket holding base 1, i.e., the bracket 2 to be placed so as not to be tampered with, and maintain it in a stable state. Can be easily secured.

  If so, in the bracket holding base 1 of the present invention, the guide portion 13 has a reduced diameter that is manifested because it has a plurality of splits 13a when connected to the hole serving as the fork connecting portion 23 in the bracket 2, However, there is a risk that the work of removing the bracket 2 after the steering shaft 3 is continuously connected from the bracket holding base 1 may be slightly troublesome. is there.

  Therefore, in the illustrated embodiment, when the guide portion 13 is formed in a cylindrical shape, the guide portion 13 has a cylindrical hollow portion on the inner side. It is assumed that it has a filling body 6 that can be inserted and removed.

  Incidentally, in FIG. 4, the filling body 6 is accommodated only in the guide portion 13 on the left side in the figure, and is not accommodated in the guide portion 13 on the right side in the figure. Of course, the same thing is accommodated in both guide parts 13 in fact.

  By the way, the filling body 6 may be formed in any manner as long as it fulfills the function of filling the empty portion inside the guide portion 13. However, in the illustrated case, the filling body 6 is made of a synthetic resin material and has a headed cylinder. It is said that it is formed in a shape.

  By making the filling body 6 made of a synthetic resin material, a so-called inexpensive part is obtained, and by forming the headed cylindrical shape, a reduction in the weight of the part can be expected.

  The upper end position of the filling body 6 is the same as or substantially the same as the upper end position of the guide portion 13 when the filling body 6 is stowed so as to be dropped into the empty portion.

  As a result, even if the filling body 6 remains housed inside the guide portion 13, it does not interfere with the placement work of the bracket 2 on the bracket holding base 1 or the removal work from the bracket holding base 1. .

  On the other hand, in the illustrated case, the filling body 6 is formed of a shallow concave recess 6a at the center of the upper end, and allows the operator's finger, particularly the tip of the thumb, to contact the curved recess 6a. It is said.

  Therefore, in this filling body 6, the removal work of the bracket 2 from the bracket holding base 1 is facilitated, that is, four fingers excluding the thumb of the operator's hand are applied to the so-called back surface of the bracket 2. In this state, if the belly of the tip of the thumb is pressed against the curved recess 6a, and the bracket 2 is lifted with four fingers so that the thumb serves as a fulcrum from this state, the bracket 2 It will be easily removed from the bracket holder 1.

  From the above, it can be said that the curved recess 6a at the upper end of the filling body 6 can be used even if it is not formed. However, if the curved recess 6a is not provided, it becomes a fulcrum. There is a risk that the thumb slips at the upper end of the filler 6, and from this point of view, the curved concave portion 6a or an alternative to this is formed, but it is important.

  As described above, the base 5 for integrally connecting the bracket holding base 1 according to the present invention is composed of a horizontal surface which is an upper end surface of a work table in a fixed state or a moving table in an assembly line. From the point of view of the present invention, as long as the bracket 2 is maintained in a fixed state in which the bracket 2 cannot be swung, the above-described base 5 is formed from a so-called vertical surface or inclined surface which is a wall surface formed in a fixed state or a movable state. It goes without saying that it is good.

  And as mentioned above, although the guide part 13 in the bracket holding stand 1 has the filling body 6, if this filling body 6 functions, this will be formed separately from the guide part 13. However, as long as it functions as a so-called finger rest, it is of course possible that the guide portion 13 is formed in a rod shape and the central portion can be replaced by the filler 6. .

It is a top view which shows the under bracket which is a bracket before a steering shaft stands upright. It is a front view which shows the state by which the steering shaft is standingly arranged by the under bracket. It is a front view which shows the state in which the upper bracket and under bracket which have a steering shaft are connected with the upper end side of a pair of front fork. It is a longitudinal cross-sectional view which shows the state in which the under bracket is hold | maintained at the bracket holding stand by this invention in the XX line position in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bracket holding base 2 Bracket 3 Steering shaft 4 Upper bracket 5 Base 5a Upper end surface which is a reference surface 6 Filler 11 Central base part 12 Both side base part 13 Guide part 21 Shaft press-fit hole 22 Both side part 23 Fork connection part

Claims (6)

A central base part that abuts the central part of the bracket on the end face parallel to the reference surface, and a pair of both side base parts that abut both side parts of the bracket on the end surface that is also parallel to the reference surface and at the same height. And a guide portion that protrudes from each of the end surfaces of the pair of both side pedestal portions and enables separable connection to a fork connection portion formed on both side portions of the bracket. Bracket holding base. The bracket holding stand according to claim 1, wherein the central base portion and the pair of both side base portions are connected to one base forming a reference surface. The height position from the reference surface of the end surface in the pair of both side pedestals is set to be the same as the height position from the reference surface of the end surface in the central pedestal portion, or the height position from the reference surface of the end surface in the central pedestal portion The bracket holding stand according to claim 1, which is set lower. 2. The bracket according to claim 1, wherein the bracket is a pair of upper brackets connected to the upper end side of the front fork that holds the front wheel at the lower end of the motorcycle and a pair of under brackets that are vertically parallel and positioned below the upper bracket. Bracket holder. The fork connecting portion formed on both sides of the bracket is formed of a hole penetrating both sides of the bracket in the thickness direction, and the guide portion is inserted into the hole while being formed into a cylindrical shape that is inserted into the hole serving as the fork connecting portion. The guide part can be reduced in diameter when the guide part is inserted into the hole. The bracket holder described. 6. The bracket holding base according to claim 5, further comprising a filling body that is accommodated inside a guide portion formed in a cylindrical shape so that the upper end position is the same as or substantially the same as the upper end position of the guide portion.

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