JP2003013940A - Bearing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing structure miniaturizing the scale and having a specified strength. SOLUTION: A shaft 18 journalized by retainers 34, 34 fitted to fitting holes 50A, 50B of the wall 46A, 46B on which a metallic bracket 30 is erected does not require a width (axial direction) to secure the specified strength and can miniaturize the scale, since the wall 46A, 46B supporting the shaft 18 is erected orthogonal to the axial direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing structure when a shaft moves in the axial direction.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a bearing structure for holding a shaft body so as to be capable of moving forward and backward in the axial direction.

For example, as shown in FIG. 8, a structure has been proposed in which a shaft body 104 is supported between two plates 100 and 102. The plates 100 and 102 are formed with recesses 106 and 108 having a semicircular cross section at substantially the center thereof. By arranging the recesses 106 and 108 so as to face each other, a hole portion 110 through which the shaft 104 is inserted is formed. Has been formed. A U-shaped guide hole 112 that penetrates the recess 108 is formed in the plate 102, and a knob 114 of the shaft body 104 projects outward from the guide hole 112. The guide hole 112 includes a guide portion 112A extending in the axial direction and a locking portion 112 extending in the circumferential direction at both ends thereof.
It consists of B and 112C.

Therefore, when the shaft body 104 is moved back and forth in the axial direction, for example, the knob 114 located in the locking portion 112B is rotated in the circumferential direction to enter the guide portion 112A, and is further displaced in the axial direction. The shaft 104 can be moved in the axial direction by entering the locking portion 112C.

Incidentally, this bearing structure is composed of the plate 100,
It is screwed to another member through an insertion hole 116 that penetrates through 102.

[0006]

In the bearing structure according to such a conventional example, the force acting from the shaft body 104 to the plate 102 is generated by the guide hole 112 in the portion forming the recess 108 of the plate 102. The both ends in the axial direction that are not formed (hereinafter, referred to as the holding portion 120). In order to support all the loads acting from the shaft body 104 at the plate 100 portion, it is necessary to make the axial length (hereinafter referred to as width) W of the holding portion 120 large. As a result,
The holding portion 1 with respect to the displacement amount (stroke length) of the shaft body 104
A large width W of 20 is required, which leads to an increase in the size of the bearing structure.

That is, there is a disadvantage that it is difficult to achieve both strength of the bearing structure and space saving.

As shown in FIG. 9, it is conceivable to provide ribs 122 on the holding portion 120, but the holding portion 120 needs a certain width W to form the ribs 122, so that the above-mentioned conventional technique is used. It has the same inconvenience as the example.

Therefore, in order to solve the above inconvenience, an object of the present invention is to provide a small bearing structure having a predetermined strength.

[0010]

According to a first aspect of the present invention, there is provided a shaft body, and a plurality of supports for supporting the shaft body so as to be movable in the axial direction and supporting a force acting from the shaft body in a plane direction. And a member.

The operation of the invention according to claim 1 will be described.

Since the supporting member for supporting the shaft supports the force acting from the shaft in the surface direction, it is possible to secure the strength for supporting a predetermined load even if the width (thickness) in the axial direction is small. . That is, the bearing structure having a plurality of support members can be miniaturized in the axial direction.

According to a second aspect of the invention, in the first aspect of the invention, the support member is a plate body extending in a direction orthogonal to the axial direction of the shaft body.

The operation of the invention according to claim 2 will be described.

If the support member is a plate member extending in a direction orthogonal to the axial direction of the shaft member, the force acting on the plate member can be most effectively supported in the surface direction, and the plate thickness is small. Also, the predetermined strength can be secured, and the size can be efficiently reduced.

The invention according to claim 3 is the invention according to claim 1 or 2.
The invention described above is characterized by including a resin-made shaft support member which is disposed on the metal support member and which supports the metal shaft body.

The operation of the invention according to claim 3 will be described.

If the support member is made of metal, it is possible to secure higher strength with the same size as compared with the case of resin. However, if the support member directly supports the shaft made of metal, there is a problem such that the metal is slid on each other and the metal is not worn or the movement is not smooth.

Therefore, according to the present invention, the wear of the shaft body is suppressed by disposing the resin-made shaft support member on the metal support member and supporting the metal shaft body on the shaft support member. Therefore, the movement in the axial direction becomes smooth.

The invention according to a fourth aspect is characterized in that the invention according to any one of the first to third aspects is provided with a locking means for locking the shaft in a moved state. To do.

The operation of the invention according to claim 4 will be described.

Since the locking means for holding the moving state of the shaft body is provided, the moving state of the shaft body is reliably maintained.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the locking means is made of resin and is fixed to the shaft body and locks a knob extending in a direction orthogonal to the axial direction. It is a locking member.

The operation of claim 5 will be described.

Since the knob is locked by the resin locking member,
The state of the shaft body is maintained. Moreover, since the knob is locked by the locking member made of resin, the click feeling is good.

According to a sixth aspect of the invention, in the fifth aspect of the invention, the engaging member and the supporting member are integrated by fitting the bearing member into both the engaging member and the supporting member. It is characterized by

The operation of claim 6 will be described.

By fitting the bearing member to both the locking member and the supporting member, the locking member and the supporting member are integrated, so that the assembly process is simplified.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION A bearing structure according to an embodiment of the present invention will be described in detail below.

First, the usage state of the deck board in which the bearing structure is used will be described.

As shown in FIGS. 1 and 2, the deck board 10 is used in the luggage compartment 14 behind the wagon 12 and has bearing members 16 attached to both ends thereof.
The shaft 18 is inserted into the through hole 22 or the through hole 24 of the bracket 20 provided on the side surface of the luggage compartment 14 so as to be rotatably supported.

The bracket 20 has a lower through hole 22.
And a through hole 24 in the upper part is formed, and the height of the deck board 10 is changed by changing the insertion position of the shaft 18 of the deck board 10. In addition,
A stand 26 for horizontally supporting the deck board 10 is provided on the lower surface of the deck board 10. When the deck board 10 is set at a low position, the stand 26 is laid down to be used and the deck board 10 is raised. When in the position, the stand 26 is erected to support the deck board 10. In this way, the deck board 10
By changing the height of the baggage, it can be used separately when the luggage compartment is used high and when it is used without a step.

As shown in FIG. 3, the bearing member 16 includes a bracket 30, a cover 32 arranged inside the bracket 30, a pair of retainers 34 arranged between the bracket 30 and the cover 32, and a retainer. Basically, the shaft 18 is supported by the shaft 34, and a shaft operating knob 36 fixed to the shaft 18 is used.

The metal bracket 30 has a rectangular hole 40 formed in the center thereof, and plates 44A and 44B at both ends of plates 44A and 44B having holes 42 for screw insertion on both sides thereof. And wall portions 46A and 46B that are vertically erected continuously are formed. Walls 46A, 4
6B includes protrusions 48A and 48B protruding toward the hole 40.
Is formed, and the hexagonal fitting holes 50A and 50B are formed so that the retainer 34 fits therein. The resin cover 32 is disposed inside the bracket 30. It has a structure similar to. That is, the plate 54 in which the hole 52 for screw insertion is formed
At both ends of A and 54B, wall portions 56A and 56B that are vertically erected continuously from the plates 54A and 54B are formed. Projecting portions 58A and 58B are formed on the wall portions 56A and 56B, and substantially square fitting holes 60A and 60B are formed so that the retainer 34 is fitted. Further, the plate 54A of the cover 32 is formed. , A fitting wall 62A (62B) which is erected to fix the knob 36 fixed to the shaft 18 to the wall portion 56A (56B), and an axial direction for guiding the knob 36 in the axial direction. And a guide wall 64 extending upright. The fitting walls 62A and 62B have locking claws 66A for locking a knob 36, which will be described later.
66B is provided.

Further, on the plate 54B of the cover 32, a restricting wall 68 for restricting the rotation amount of the knob 36 extends in the axial direction (the direction connecting the fitting holes 60A and 60B).

Each of the pair of retainers 34 has a quadrangular protrusion 70 formed on one surface 34A thereof and a hexagonal protrusion 72 formed on the other surface 34B thereof. A through hole 74 for inserting the shaft is formed through the space. As shown in FIG. 4, the retainer 34 is inserted between the inside of the wall portion 46 </ b> A of the bracket 30 and the outside of the wall portion 56 </ b> A of the cover 32, and the protruding portion 70.
Is fitted into the fitting hole 60A of the cover 32 (wall portion 56A), and the protrusion 72 is fitted into the fitting hole 50A of the bracket 30 (wall portion 46A). Thereby, the bracket 30
And the cover 32 are integrated.

The shaft 18 is the wall portion 5 of the bracket 30.
It is a cylindrical body having a length approximately twice the length between 0A and 50B, and is inserted into and supported by the through holes 74 of the pair of retainers 34. Further, a circumferential groove 76 for locking the knob is formed at substantially the center thereof.

A knob member 36 fixed to the shaft 18
Includes a base 80 having a hole 78 into which the shaft 18 is inserted, and a crank-shaped knob 82 extending from the base 80 in a direction orthogonal to the axial direction of the hole 78. Further, a pin hole 84 communicating with the outside is formed along the wall surface of the hole 78 in the base 80, and the pin 86 is inserted into the pin hole 84 from the outside to fit the pin 86 into the groove 76 of the shaft 18. By causing the knob member 36 to move to the shaft 18
(See FIG. 4). As a result, the knob member 3
6 and the shaft 18 are integrated.

As shown in FIG. 5, the bearing member 16 constructed in this manner is provided in the recess 90 extending from the end of the lower surface 10A of the deck board 10 with the protrusions 48A, 48B of the bracket 30 and the cover 32. 58A and 58B are inserted to attach the plates 44A and 44B of the bracket 30 to the lower surface 1
The bearing member 16 is screwed to the lower surface 10A of the deck board 10 by a screw which is brought into contact with the 0A and is inserted through the hole 42 of the bracket 30 and the hole 52 of the cover 32.

The operation of the bearing structure thus configured will be described.

A case where the deck board 10 is replaced from the lower stage to the upper stage will be described.

First, with the shafts 18 of the pair of bearing members 16 inserted into the through holes 22 of the bracket 20 on the side of the vehicle (see FIG. 2), the rear ends of the deck boards 10 are lifted, and the rear ends thereof are laced. Lock it at the top of the opening (Fig. 1
reference).

In this state, the bottom surface 10 of the deck board 10 is
The shaft 18 is pulled out from the through hole 22 of the bracket 20 by operating the pair of bearing members 16 arranged in A.
The details will be described below.

In the bearing member 16, initially, the knob 82 is inserted between the wall portion 56B of the cover 32 and the fitting wall 62B and locked by the locking claw 66B.

Therefore, first, the knob 82 is rotated clockwise (in the direction of arrow A) in the drawing against the elastic force of the locking claw 66B and brought into contact with the regulating wall 68 (see FIG. 5). Control wall 68
When the rotation of the knob 82 is restricted by, as shown in FIG.
The space between the regulation wall 68 and the guide wall 64 is moved in the axial direction (direction of arrow X) until it abuts the wall portion 56A. As a result, the shaft 18 is pulled out from the through hole 22 of the bracket 20 on the vehicle side surface.

When the knob 82 comes into contact with the wall portion 56A, it is rotated counterclockwise (in the direction of arrow B) in the drawing, inserted between the wall portion 56A and the fitting wall 62A, and the knob 82 is engaged by the locking claw 66A. Lock. This locks the shaft 18.

In this state, the deck board 10 is lifted, the position of the shaft 18 is aligned with the position of the upper insertion hole 24, and the operation opposite to the above operation is performed.
The shaft 18 is inserted into the insertion hole 24 and locked.

Further, the stand 26 is set up and the string 92 is removed in this state. As a result, the deck board 10 is fixed at a high position. As a result, the step in the luggage compartment is eliminated.

In this bearing member 16, since the load is supported by the bracket 30 made of metal, it is possible to support a relatively high load as compared with the bracket made of resin, and the size can be reduced.

In particular, since the walls 46A and 46B are erected in the direction perpendicular to the axial direction, the force acting from the shaft 18 can be dispersed in the surface direction of the walls 46A and 46B, and Thickness of parts 46A and 46B (thickness in the axial direction)
Can be thinned. Therefore, it is possible to support a predetermined load in a space-saving manner.

Since the retainer 34 supports the sliding portion of the shaft 18, the metal bracket 30 and the shaft 18 can be prevented from sliding and the shaft 18 can be moved smoothly.

Further, by fitting the protruding portion 70 of the retainer 34 into the fitting holes 58A and 58B of the cover 32 and the protruding portion 72 of the retainer 34 into the fitting holes 48A and 48B of the bracket 30, the placket 30 and the cover 32 are fitted. Can be integrated. That is, the assembly process of the bearing member 16 is simplified.

The cover 32 made of resin (POM, etc.)
Since the knob 82 is fixed by (the locking claws 66A, 66B), the click feeling at the time of locking is good.

Further, the walls 46A, 4 of the bracket 30 are
Since 6B is a flat surface, variations in press bending are less likely to occur, and manufacturing accuracy is also good.

In this embodiment, the deck board 10
Although the bearing structure used for the above has been described, the present invention is not limited to this and can be applied to other applications such as door locks.

[0056]

As described above, the bearing structure of the present invention can achieve both predetermined strength and downsizing.

[Brief description of drawings]

FIG. 1 is an explanatory view of a deck board usage state according to an embodiment of the present invention.

FIG. 2 is a bearing state explanatory diagram of the deck board according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view of the bearing structure according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part of the bearing structure according to the embodiment of the present invention.

FIG. 5 is a perspective view of a bearing structure according to an embodiment of the present invention.

FIG. 6 is a perspective view of a bearing structure according to an embodiment of the present invention.

FIG. 7 is a perspective view of a bearing structure according to an embodiment of the present invention.

FIG. 8 is a perspective view of a bearing structure according to a conventional example.

FIG. 9 is a perspective view of a bearing structure according to a conventional example.

[Explanation of symbols]

18 Shaft 30 Bracket (support member) 32 cover (locking member) 34 Retainer (bearing member) 36 Knob member (knob)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroaki Oyama             Kanto own, No. Taura Port Town, Yokosuka City, Kanagawa Prefecture             Within Dowa Kogyo Co., Ltd. (72) Hiroshi Ishiyama, inventor             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. (72) Inventor Shirase Shouichi             1 184 Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Nifco Co., Ltd. (72) Inventor Motohiko Kimura             1 184 Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Nifco Co., Ltd. F term (reference) 3J105 AA07 AA15 AB02 AB24 AB48                       AB50 AC06 BA08 BA47 BB13                       BB51 BC02 BC12 DA32

Claims (6)

[Claims] 1. A bearing structure comprising: a shaft body; and a plurality of support members that movably support the shaft body in an axial direction and support a force acting from the shaft body in a surface direction. 2. The bearing structure according to claim 1, wherein the support member is a plate body extending in a direction orthogonal to the axial direction of the shaft body. 3. The bearing structure according to claim 1, further comprising a resin-made shaft support member which is disposed on the metal support member and which supports the metal shaft body. 4. A locking means for locking the shaft in a moving state is provided.
The bearing structure according to any one of 1. 5. The locking means is fixed to the shaft body,
The bearing structure according to claim 4, which is a resin locking member that locks a knob extending in a direction orthogonal to the axial direction. 6. The bearing structure according to claim 5, wherein the engaging member and the supporting member are integrated by fitting the bearing member into both the engaging member and the supporting member.