JP2515947Y2 - Shoulder buckle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is designed so that when the shoulder belt is damaged, it can be easily removed and replaced, and when the shoulder belt or the school bag body is dirty, it can be removed and washed. Regarding buckle buckle.

[Prior Art] Conventionally, a backpack buckle as disclosed in Japanese Utility Model Laid-Open No. 64-54818 has been used to attach the upper end portion of a shoulder belt such as a school bag.

[Problems to be solved by the invention] However, assembling of the mounting plate B and the mounting rod A of the backpack buckle is such that the enlarging head 51a is provided at the tip of the mounting shaft 51 of the mounting rod A and the boss portion having the double peripheral wall is provided. The inner boss portion 52 having the tapered inclined peripheral wall is provided with a slit 52a directed upward from the lower end.
Is provided, and the lower end of the boss portion 52 is elastically deformable.
52b, the tongue piece 52b is expanded by pushing the mounting shaft 51 into the boss portion 52 from the tip side, and the tongue piece 52a returns with the passage of the bulging head 51a, and the bulging head 51a is bossed. 52
I couldn't remove it.

Therefore, even though the bra part at the lower end of the shoulder belt can be easily removed, the upper end does not come off, so that the shoulder belt cannot be completely removed, and the shoulder belt must be replaced or dirty when it is damaged. There is a disadvantage that the school bag itself has to be discarded because it cannot be removed at the time.

SUMMARY OF THE INVENTION In order to solve the above-mentioned inconvenience, the present invention aims to provide a backpack buckle in which the shoulder belt can be removed very easily.

[Means for Solving the Problems] In order to achieve the above object, the present invention is a shoulder belt buckle 1 having an axle rod 2 for fitting a buckle on the back and an axial hole through which the axle rod 2 of the buckle 1 is inserted. 3 includes a mounting substrate 5 of the buckle 1 on which a boss portion 4 having a transparent portion 3 is projectingly provided, and the shaft rod 2 has a shaft hole 3 on an upper surface of the boss portion 4.
It has a collar-shaped head 2a that comes into contact with the peripheral surface, and a boss 4 at the tip.
An engaging projection 8 is provided to engage with the peripheral surface of the shaft hole 3 on the lower surface, and the shaft hole 3 has an insertion groove 8 ′ for the engaging projection 8.
Is provided between the upper and lower opening surfaces so that the buckle can be engaged with and disengaged from the mounting substrate 5, and the engaging projection 6 is provided on the lower surface of the collar-shaped head 2a of the shaft rod 2. At the same time, on the peripheral surface of the shaft hole 3 on the upper surface of the boss portion 4, a stepped projection 9 having an upright abutment surface against which the abutment projection 6 abuts, and a gentle slope 10a and a steep slope 10b which the engagement projection 6 can cross The angled protrusions 10 are provided in the circumferential direction with a space therebetween to limit the position at which they can be engaged and disengaged so as to prevent accidental disengagement of the shaft rod 2.

[Operation] The backpack buckle configured as described above is formed such that the insertion groove 8'in the mounting substrate 5 is located at the intermediate position between the stepped projection 9 and the chevron projection 10, and the axle 2 of the buckle 1 is engaged. Collision part 8
So as to be in a position matching the insertion groove 8'of the shaft hole 3, the collar-shaped head 2a is inserted into the shaft hole 3 to a position where it comes into contact with the upper surface of the boss portion 4, and the shaft rod 2 is rotated to rotate it. The projecting portion 8 engages with the peripheral surface of the shaft hole 3 on the lower surface of the boss portion 4, and the buckle 1 is attached to the attachment substrate 5.

Next, the buckle 1 rotates the rod 2 with a strong force, so that the engaging projection 6 crosses the mountain projection 10 along the gentle slope 10a of the mountain projection 10, and the mountain projection 10 and It enters between the step-like protrusion 9 having the upright abutment surface, and the engaging protrusion 6
The rod 2, that is, the buckle 1, freely rotates within the range of movement, and it is easy to carry when carrying the backpack on the back, and after carrying it, it is oriented to the surface of the shoulder, and the rod 2 comes out from the shaft hole 3 You will not come out carelessly.

Further, when the buckle 1 is removed from the mounting substrate 5, the shaft rod 2 is rotated with a strong force to cause the engaging protrusion 6 on the lower surface of the collar-shaped head 2a to go over the mountain-shaped protrusion 10 by the steep slope 10b. The buckle 1 can be easily removed from the mounting substrate 5 by pulling out the rod 2 so that the engaging protrusion 8 of the second member is at the position of the insertion groove 8 '.

[Embodiment] An embodiment of a buckle buckle according to the present invention will be described below with reference to the drawings.

1 is a buckle in which the belt mounting rod portion 1a is inclined to one side and the belt insertion hole 1'is gradually widened to one side, and 2 is a shaft rod for assembling the buckle 1 and the mounting substrate 5. The collar-shaped head 2a and the large-diameter portion 2b connected to the collar-shaped head 2a have a reduced-diameter portion 2c that gradually decreases in diameter from the large-diameter portion 2b and a small-diameter portion 2d connected to the reduced-diameter portion 2c. The support shaft 2e integrally formed with the collar-shaped head 2a in the diametrical direction on the upper surface of the buckle 1a is the buckle 1
The buckle 1 and the axle rod 2 are integrated by axially mounting between the other protruding ends of the pair of parallel rod portions 1b, 1b supporting the attachment rod portion 1a between the one end portions. There is.

Further, the brim-shaped head 2a has a thin peripheral edge 2'b, and a circular step 2'c is provided between the peripheral edge 2'b and the lower surface of the main body 2'a. Head in the direction orthogonal to spindle 2e
A pair of engaging projections 6, 6 facing each other across the center of 2a are provided at the same height as the lower surface of the main body 2'a.
On the lower surface of a, a protrusion 7 is provided on the wide side of the belt insertion hole 1'in the direction of the support shaft 2e.

Further, a pair of engagements in which the upper portion is orthogonal to the shaft rod 2 and the lower surface is inclined from the tip to the reduced diameter portion 2c side at positions facing each other with the axis of the rod 2 interposed therebetween on the peripheral surface of the distal end of the small diameter portion 2d. A protrusion 8 is provided.

Reference numeral 5 denotes a horizontally long mounting substrate having the shaft hole 3, which is wide with one side in the length direction having an arcuate peripheral edge,
The buckle 1 is mounted by inserting the rod 2 into the shaft hole 3, and a pair of shaft holes 3 are provided in the longitudinal direction of the mounting substrate 5, and a boss projectingly provided on the upper surface of the mounting substrate 5. It has parts 4 and 4.

Also, the boss portion 4 provided on the right side from the wide side of the upper surface of the mounting substrate 5 to the other side is loose from the stepped projection 9 having the upright abutment surface in the circumferential direction of the upper surface, that is, along the outer peripheral edge thereof. Slope
10a and a steep slope 10b are provided to form a chevron protrusion 10, and the chevron protrusion 10 is orthogonal to the line connecting the center lines of both shaft holes 3,
The line x extending to the wide side of the mounting substrate 5 is provided counterclockwise from the position where the central angle θ ₁ is 5 ° to the position where θ ₂ is 45 °, and the steep slope 10b is centered counterclockwise from the base line x. From the position of the angle θ _{1 to} the position of θ ₃ of 15 °, the central angle θ ₃
The gentle slope 10a extends from the position of to the position of θ ₂ .

Further, the stepped protrusion 9 has a central angle θ ₄ counterclockwise from the base line x.
Is provided between the position of 85 ° and the position of θ ₅ of 125 °, and these ridges 10 and stepped protrusions 9 are provided on the upper surface of the boss 4 symmetrically with respect to the axis. Another Yamagata protrusion 10
And a stepped protrusion 9.

Further, on the upper surface of the boss portion 4, a protrusion provided on the lower surface of the main body portion 2'a of the collar-shaped head portion 2a of the shaft rod 2 between the peripheral edge of the shaft hole 3 and the mountain-shaped and step-shaped protrusion portions 10 and 9. A circumferential groove 7'concentric with the shaft hole 3 into which the shaft 7 is inserted is provided, and a line extending in the direction opposite to the base line x is provided in the circumferential groove 7 ', which is orthogonal to the line connecting the centers of both shaft holes 3. As a base line x ', a partition 7'a which is formed in the same plane as the upper surface of the boss portion 4 at a central angle θ _{3 in the} clockwise direction from the base line x'.
Is provided.

Further, the shaft hole 3 has respective hole portions into which the large-diameter portion 2b, the reduced-diameter portion 2c, and the small-diameter portion 2d of the shaft rod 2 are inserted from the upper portion, and is further attached to the hole portion into which the small-diameter portion 2d is inserted. The large diameter portion reaching the lower surface of the substrate 5
The hole 3a has substantially the same diameter as 2b, and the hole to which the reduced diameter portion 2c of the shaft rod 2 fits has a central angle θ _{3 in} the clockwise direction from the line connecting the centers of the shaft holes 3 and ₃ . The engaging projection 8 centered on the position
Insertion grooves 8'having a width are provided at opposing positions with the center of the shaft hole 3 interposed therebetween.

Further, the boss portion 4 has a recess 4a that opens to the lower surface of the mounting substrate 5.
Is provided so as to divide the boss portion 4 into four equal parts in the circumferential direction and has a hollow shape, so that the weight of the mounting substrate 5 is reduced.

The above is the description of the boss portion 4 on the right side, and the other boss portion 4 also passes through the center of the line connecting the centers of the shaft holes 3 and 3 and is completely different from the boss portion 4 with respect to a line orthogonal to this line. It is formed symmetrically.

Reference numeral 11a is a hole provided in the peripheral portion of the mounting substrate 5 into which the tapping screw 11 is inserted.

Numeral 12 is a decorative cover having a substantially flat shape similar to that of the mounting board 5 covering the upper surface of the mounting board 5 and having holes 13 and 13 through which the boss portions 4 and 4 of the mounting board 5 project, and the mounting board 5 is provided on the lower surface. The pedestal 14 is provided at the screwing position of the tapping screw which is screwed in from the tapping screw hole 11a.

This decorative cover 12 is placed on the upper surface of the mounting substrate 5 and has a hole.
The boss portion 4 is protruded from the screw 13 and the tapping screw 11 is screwed into the pedestal 14 through the hole 11a to be integrally assembled with the mounting substrate 5. Then, when the shaft rod 2 of the buckle 1 is inserted into the shaft hole 3 of the mounting substrate 5 with the engaging projection 8 corresponding to the position of the insertion groove 8 ', the collar-shaped head 2a is inserted until it comes into contact with the upper surface of the boss portion 4. , The locking projection 6 is located between the step projection 9 and the chevron projection 10, and the peripheral edge portion 2'b of the lower surface of the collar-shaped head 2a is located on the upper surfaces of the step projection 9 and the chevron projection 10. , The main body 2'of the collar-shaped head 2a
The a contacts the upper surface of the boss 4, and the projection 7 engages with the groove 7 ', so that the tip of the rod 2 projects into the hole 3a.

The fitting of the boss portion 4 and the stem 2 of the buckle 1 with respect to the right boss portion 4 will be described below.

By rotating the buckle 1 having the shaft rod 2 fitted thereinto clockwise, the engaging projection 8 of the shaft rod 2 is rotated in the hole 3a,
The upper surface of the engaging projection 8 abuts on the upper surface of the hole 3 a of the shaft hole 3, and the engaging projection 6 abuts on the gentle slope 10 a of the chevron projection 10.

Then, when the buckle 1 is further turned to the right, the engaging projection 6 crosses the chevron projection 10 along the gentle slope 10a and enters between the step projection 9 and the chevron projection 10. It can rotate freely within the range. Therefore, the orientation of the shoulder belt can be freely changed within this range, and the school bag can be easily carried on or off.

Even if the buckle 1 is rotated further to the right, the upright abutment surface of the step projection 9 prevents the engagement projection 6 from crossing the step projection 9.

Moreover, when the buckle 1 is turned counterclockwise, the engaging protrusion 6 is a mountain-shaped protrusion.
Since it engages with 10, it is forced over the steep slope 10b and inserted between the stepped projection 9 and the chevron projection 10 so that the engaging projection 8 is aligned with the insertion groove 8 '. Buckle 1
The shaft rod 2 is pulled out from the shaft hole 3 by pulling upward.

The left boss portion 4 and the stem 2 of the buckle 1 are omitted, but the rotation is in the opposite direction.

[Effect] The buckle buckle according to the present invention is configured as described above, and in particular, the stem of the buckle has a collar-shaped head that abuts on the peripheral surface of the shaft hole on the upper surface of the boss, and the tip has the above-mentioned structure. An engaging projection is provided on the lower surface of the boss portion for engaging with the peripheral surface of the shaft hole, and an insertion groove for the engaging projection is provided in the shaft hole between the upper and lower opening surfaces. Therefore, the buckle is rotatably attached to the mounting substrate by the engagement between the engaging projection of the inserted rod and the peripheral surface of the shaft hole.

Further, an engaging projection is provided on the lower surface of the collar-shaped head of the shaft rod, and a stepped shape having an upright engaging surface on which the engaging projection engages on the peripheral surface of the shaft hole on the upper surface of the boss. Since the protrusion and the mountain-shaped protrusion composed of the steep slope and the inclined surface that can be crossed by the engaging protrusion are provided in the circumferential direction at intervals, the buckle is inserted into the mounting groove of the mounting substrate. By being formed so as to be in the intermediate position between the step protrusion and the stepped protrusion, the engagement protrusion provided at the tip of the rod is aligned with the insertion groove so that the lower face of the collar-shaped head is the boss portion of the rod. Insert it to the position where it hits the upper surface, rotate the buckle, and let the engaging projection on the lower surface of the collar-shaped head of the rod stick over the mountain-shaped projection by the gentle slope, and insert it between the step-shaped projection that has the upright engaging surface. This allows the buckle to rotate within the range in which the engaging protrusion moves between them, and shoulder belts when carrying a school bag or the like. Easy backpack direction becomes an appropriate angle.

In addition, the mountain projection is made to go over the steep slope to the engaging projection,
By pulling the buckle 1 by matching the engaging projection at the tip of the shaft with the position of the insertion groove of the shaft hole, the shaft rod is pulled out from the shaft hole, so that the buckle can be removed from the mounting substrate.

Therefore, it is very convenient when the shoulder belt is soiled, the main body such as the school bag is soiled, or the shoulder belt is damaged.

Also, by removing the shoulder belt during packaging, the bulk is reduced and the storage is improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a buckle buckle according to the present invention, FIG. 2 is an exploded perspective view from the bottom side, FIG. 3 is a plan view of the same, and FIG. 5 and 5 are plan views of the mounting substrate, FIG. 6 is a front view of the same, FIG. 7 is a plan view of the upper surface of the right boss portion, and FIG. 8 is the angle of the buckle and the engaging projection when the rod is fitted. And the like, FIG. 9 is an explanatory view showing the related positions of the rotation range of the attached buckle and the engaging projections, and FIG. 10 is a combination of the boss portion and the mounting shaft of the conventional example. It is a disassembled perspective view which cuts a part and shows the attached state. 1 ... Buckle, 2 ... Shaft rod, 3 ... Shaft hole, 4 ... Boss, 5 ... Mounting board, 6 ... Engagement protrusion, 8 ... Engagement protrusion, 8 '... Insert Grooves, 9 ... stepped protrusions, 10 ... chevron protrusions.

Claims (1)

(57) [Scope of utility model registration request] 1. A buckle of a shoulder belt having a shaft rod for fitting, and a buckle mounting substrate having a protruding boss portion having a shaft hole through which the shaft of the buckle is inserted. The shaft rod is provided with a collar-shaped head portion that abuts on the shaft hole peripheral surface on the upper surface of the boss portion, and a lower surface of the collar-shaped head portion is provided with an engaging protrusion. An engaging protrusion that engages with the peripheral surface of the shaft hole on the lower surface of the boss is provided at the tip of the shaft rod, and an insertion groove of the engaging protrusion is vertically provided in the shaft hole of the boss. The stepped protrusion, which is provided between the opening faces and has an upright abutment surface with which the abutment protrusion abuts, is provided on the peripheral surface of the shaft hole on the upper surface of the boss portion, and the abutment protrusion can cross the mountain. The shoulder bag is characterized in that a mountain-shaped projection formed of a gentle slope and a steep slope is provided in the circumferential direction at an interval. Cycle.