A webbing take-up device has a base member having a bottom portion and side plate portions rising from the opposite side edges of the bottom portion and opposed to each other, and a reel assembly rotatably supported in bearing holes formed at the central portion of the side plate portions in opposed relationship with each other. At least one of the side plate portions is formed with a cut-away extending from the bearing hole in a direction generally opposite to webbing draw-out direction and having a width greater than the diameter of the end of the reel assembly leading to the outer periphery of the side plate portion. The ends of the reel assembly are received in the bearing holes through the cut-away or the cut-aways and are rotatably supported by bushing members inserted in the bearing holes or the bushing member and bearing hole. The cut-away or the side plate portion is provided with means cooperable with the slip-out preventing means of the bushing member to fix the bushing member at a predetermined position.

BACKGROUND OF THE INVENTION 1. Field of the Invention 
This invention relates to a webbing take-up device which is easy to 
assemble. 
2. Description of the Prior Art 
Heretofore, in order to incorporate a reel assembly such as a webbing 
take-up shaft assembly or a latch assembly into the base member of a 
webbing take-up device (hereinafter referred to as a retractor), it has 
been necessary to incorporate webbing at the same time and this has led to 
cumbersomeness of the assembly and many disadvantages in the flow of the 
assembling work. 
SUMMARY OF THE INVENTION 
In view of such disadvantages, it is an object of the present invention to 
provide a retractor which is easy to assemble and which enables the 
assemblage of a reel assembly to the base member and the assemblage of 
webbing to the reel assembly to be carried out independently. 
To achieve such object, in the present invention, a cut-away extending from 
at least one bearing hole of the base member to the outer periphery 
thereof is formed and a reel assembly is rotatably supported by bushing 
members fitted in said cut-aways or the bushing member and said bearing 
hole. 
The invention will become fully apparent from the following detailed 
description thereof taken in conjunction with the accompanying drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 
Embodiments of the present invention will hereinafter be described. 
FIG. 1 shows essential parts of a first embodiment of the present 
invention. 
The base member 1 of a retractor has a bottom portion 3 and a pair of side 
plate portions 5, 7 rising from the opposite side edges of the bottom 
portion and opposed to each other. In one end portion of the bottom 
portion 3, there is formed a circular hole 3a through which a clamping 
member for securing the retractor at a suitable location may be passed. 
The opposite side plate portions 5 and 7 are formed with bearing holes 5a 
and 7a in which the ends 11 (only one of which is seen in FIG. 1) of a 
latch assembly 9 which is a reel assembly may be received. There are also 
formed gradually widening cut-aways 5b and 7b extending leftwardly and 
upwardly from at least one of the bearing holes (in the embodiment, from 
both bearing holes) as viewed in FIG. 1 so that the bearing holes form 
closed ends of the cut-aways. Since the present embodiment is an automatic 
locking type or an emergency locking type retractor, latch plates 15 and 
17 are forced onto the opposite ends of the shaft 13 of the reel assembly 
9. That is, these latch plate 15 and 17, when necessary, mesh with unshown 
locking plate tiltable in sector holes 5c and 7c of the side plate 
portions 5 and 7 by unshown means, thereby preventing rotation of the reel 
assembly 9 in webbing draw-out direction. The automatic locking or 
emergency locking mechanism itself is not shown because it is not directly 
related to the present invention. 
The shaft 13 is formed with two opposed webbing threading holes 13a (in 
FIG. 1, only one of such holes which is greater in width and through which 
a pin 19 may pass is seen), and the webbing W prevented from slipping out 
of a narrower hole by a webbing set pin 19 goes out from this narrower 
hole and is wrapped about the shaft 13. 
The unseen end of the reel assembly 9 is fitted into the annular portion 23 
of a bushing member 21 and supported by the bearing hole 5a. The bushing 
member 21 further has a guide rib portion 25 and a flange portion 27 
having a pin 27a studded therein, and when this has been completely 
incorporated, the rib portion 25 closely fits in the cut-away 5b and the 
pin 27a fits in the small hole 5d of the side plate portion 5, whereby the 
bushing member 21 is fixed onto the side plate portion 5. 
On the other hand, the end 11 of the reel assembly 9 is also supported in 
the bearing hole 7a through a bushing member. This will be described in 
detail with reference to FIG. 2. This bushing member 31 has a plate 
portion serving also as a plate for a take-up spring 38 biasing the reel 
assembly 9 in webbing take-up direction, an annular portion 33 in the form 
of an uninterrupted circular ring, provided with an outer slip-out 
preventing rib 33a onto which the end 11 is fitted, and rib portions 35 
each having an outer slip-out preventing rib 35a. When the bushing member 
is received in cut-away 7b ribs 33a and 35a prevent its lateral removal. 
Between rib portions 35 is a web portion 31a which connects the rib 
portions to annular portion 33. When a take-up spring assembly 29 has been 
completely incorported, the inner end of the spring 38 is received in the 
slit of the end 11 and the bushing member 31 is positioned by being fitted 
in the spring containing portion of a spring cover 37, and the pin 37a of 
the spring cover 37 is fitted into the small hole 7d of the side plate 
portion 7, whereby the bushing member 31 is fixed at a predetermined 
position. 
From the foregoing construction, it will be apparent that the incorporation 
of the webbing into the reel assembly 9 and the incorporation of the 
webbing into the base member 1 can be effected in separate steps. 
As will be seen from the foregoing description of the first embodiment, the 
type of the retractor to which the present invention is applied may be any 
of the non-locking type, the automatic locking type and the emergency 
locking type. That is, in the non-locking type, the latch plate of the 
reel assembly 9 may be a flange. Accordingly, in the ensuing description, 
the base member, etc. which are the characteristic portions of each 
embodiment will only be mentioned. 
A second embodiment shown in FIG. 3 will now be described. In the second 
embodiment, a bushing member 2 has an annular portion 4 again in the form 
of an uninterrupted circular ring provided with an outer slip-out 
preventing rib 4a, and rib portions 6 extending from the annular portion 4 
while slightly widening the spacing therebetween. Each rib portion 6 has 
an outer projection 6a at an intermediate part thereof, and the outer end 
portion forms a portion 6b of U-shaped cross-section. The bushing member 2 
may be inserted into a cut-away 8 by slightly inwardly flexing the outer 
end portions of the ribs 6 and inserting the bushing member from the outer 
peripheral portion of the cut-away. Accordingly, the bushing member 2 is 
fixed at a predetermined position with the outer end portions 6b of the 
rib portions 6 engaged with the inner and outer surfaces of a side plate 
portion 10 which form the edges of the cut-away 8 to thereby prevent 
lateral removal of the bushing member and with the projection 6a fitted in 
the recesses 8a of the cut-away 8 to fix the position of the bushing 
member lengthwise and prevent lengthwise removal of the bushing member. 
Again, a web portion 6c, between the rib portions, connects the rib 
portions to the annular portion. 
A third embodiment will now be described with reference to FIG. 4. In the 
third embodiment, a bushing member 12 has an annular portion 14 in the 
form of an uninterrupted circular ring provided with an outer slip-out 
preventing rib 14a, and rib portions 16 extending from the annular portion 
14 while slightly widening the spacing therebetween and provided with 
inner and outer slip-out preventing ribs 16a, 16b. In this embodiment, 
inwardly projected portions 18a are formed at the entrance portion of the 
cut-away 18 of a side plate portion 20, and these inwardly projected 
portions are engaged with the end faces 16c of the bushing member 12 when 
fitted into the cut-away 18, thereby fixing the lengthwise position and 
preventing lengthwise removal of the bushing member 12. This bushing 
member 12 may also be inserted into the cut-away from the outer peripheral 
portion thereof by being inwardly flexed. As in the previous embodiments 
the ribs 16a, 16b embrace the edges of the side plate portion defining the 
cut-away to prevent lateral removal of the bushing member. Web portions 
16d between the rib portions connect the rib portions to the annular 
portion. 
Reference now will be made to FIGS. 5 and 6 to describe what can be 
modifications of the above-described embodiments in which contrivance has 
been made to prevent deformation of the bearing holes when a load is 
applied. 
In the example of FIG. 5, there are drawing-machined portions 22a and 24a 
around bearing holes 22 and 24, respectively. By these, concentration of 
stress may be avoided to achieve the above-mentioned object. 
In the example of FIG. 6, a slot 26a is formed through a bottom portion 26 
so that webbing can go out of the retractor therethrough. Accordingly, the 
webbing draw-out direction and the direction in which cut-aways 28, 30 
extend are made more opposite to each other than in the above-described 
embodiments, and the end portion of the reel assembly is supported by the 
bearing holes with a great area of contact, thereby achieving the 
above-mentioned object. 
FIG. 7 shows a single-tooth latch assembly (40) usable in an automatic 
locking type or emergency locking type retractor and an integral ratchet 
gear type webbing center rest preventing plate 42 adapted to be inserted 
over the other end of the latch assembly 40. This eliminates the necessity 
of further fitting a separate ratchet gear and is therefore convenient in 
manufacture. 
FIGS. 8 and 9 show base members 41 and 44 formed with locking plate sector 
holes 47, 49, 50, 52, at such positions that when a load has been applied, 
the latch plate is not disengaged from the locking plate in these sector 
holes due to deformation of bearing holes 43,45, 46, 48. In the base 
member 44 of FIG. 9, the webbing is drawn out through a slot 54 in the 
direction of arrow and thus, deformation of the bearing holes is not 
liable to occur. 
Thus, according to the present invention, the assemblage of the reel 
assembly and the assembly thereof to the base member can be carried out in 
separate steps, and a reduced number of assembling steps and improved 
assembling work are realized and further, efficient manual assembly as 
well as automatized assembling work can be realized.