TW201427616A - Belt adjuster - Google Patents

Abstract

Provided is a belt adjuster that can release the joining of a fastening claw and a belt by only the operation of a single operating piece and also can prevent the belt adjuster from becoming large. The belt adjuster is provided with: a belt (11); an adjuster main body (20) having a front surface plate (21), a back surface plate (22), a top surface plate (23), and a bottom surface plate (24) and having a belt insertion part (25) into which the belt (11) is inserted formed along a left and right direction; and an operating piece (40) disposed slidably in the belt insertion part (25). The front surface plate (21) has a cantilevered beam-shaped fastening piece (28), and the fastening piece (28) has a fastening claw (29) that can be joined with a fastening part (12) of the belt (11) at a tip part, and a first cam (30) protruding toward the operating piece (40). The operating piece (40) is provided so as to protrude toward the fastening piece (28) and has a second cam (43) that comes into contact with the first cam (30).

Description

Belt adjuster

The present invention relates to a belt adjuster for adjusting the length of a belt.

In the conventional belt adjuster, the belt insertion portion is formed by the opposing bottom wall portion, the front wall portion, and the opposite side wall portions, and the locking piece is elastically deformed by the slit at the front wall portion. At the front end of the locking piece, a locking claw for locking the belt to be unreturnable is protruded, and a cone portion is provided on both sides of the locking piece, and both side portions of the locking piece are respectively provided at both side portions The operation unit that deforms the tip end of the locking piece toward the outside is known (for example, see Patent Document 1).

The other belt adjuster of the prior art includes: a belt that protrudes at an equal interval on the surface to adjust the protrusion; a belt insertion portion that penetrates the left and right direction, and an adjuster body that forms an operation piece insertion hole thereon; The operation piece insertion hole is slidably inserted in the up-down direction, and on the one hand, an operation piece of the engagement protrusion that engages with the adjustment protrusion is protruded; and is disposed between the adjuster body and the operation piece, and the operation piece is facing upward The spring that pushes is known (for example, refer to Patent Document 2).

(previous technical literature) (Patent Literature)

Patent Document 1: Japanese Real Fair 02-027763

Patent Document 2: Japanese Patent Laid-Open No. Hei 10-179215

However, in the buckle described in Patent Document 1, when the two operation portions are not pressed at the same time, the engagement between the locking claw and the belt cannot be released. Further, in the buckle described in Patent Document 2, the engagement between the locking claw and the belt can be released by operating one operation piece. However, since the adjustment protrusion is formed in the belt in two rows, the belt is The width is large and the belt adjuster is enlarged.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a belt adjuster which can release the engagement between the locking claw and the belt as long as one operation piece is operated, and can prevent the belt adjuster from being enlarged.

The above object of the present invention is achieved by the following constitution.

(1) A belt adjuster according to the present invention, comprising: a belt having a plurality of locking portions formed on a surface thereof; and an upper end of a surface plate and a back plate, a connection surface plate, and a back plate which are disposed in parallel in the front and rear directions Above the department a plate, a lower surface of the bottom surface of the connecting surface plate and the back plate, and a surface of the adjuster body formed by inserting the belt insertion portion of the belt along the left and right direction by using the surface plate, the back plate, the upper panel, and the lower panel; And an operation piece that is slidable in the belt insertion portion, and the surface plate has a cantilever-shaped locking piece that forms a slit and connects one of the left and right end surface plates, and the locking piece is attached to the front end a belt adjuster having a locking claw engageable with a locking portion of the belt, wherein the locking piece has a first cam protruding toward the operating piece, and the operating piece has a protruding toward the locking piece and The second cam that abuts on the first cam.

(2) The belt adjuster according to (1), further comprising: a spring that presses the operation piece in one of the up-and-down directions, and the operation piece has a spring fitting recess that holds the spring.

(3) The belt adjuster according to (2), wherein the spring fitting recess has a pair of leg portions and a pair of leg portions that respectively lock the spring.

(4) The belt adjuster according to (2) or (3), wherein the spring is a spiral coil spring.

(5) The belt adjuster according to (1), characterized in that the spring adjuster is provided with a spring that presses the operation piece toward either of the up and down directions.

(6) The belt adjuster according to any one of (1) to (5) wherein the operation piece is inserted into the operation piece insertion hole of the upper and lower panels, and the operation piece has the insertion into the operation piece. When the hole is inserted, the hole is elastically deformed in the left-right direction to reduce the width, and is expanded in the left-right direction after the insertion to be widened, and a pair of right and left retaining portions that abut against the lower surface of the upper panel.

(7) The belt adjuster according to (1) or (6), wherein the operation piece is integrated with a spring portion that presses the operation piece in either one of the up and down directions.

According to the belt adjuster of the present invention, the locking piece has the first cam that protrudes toward the operation piece, and the operation piece has the second cam that protrudes toward the locking piece and abuts against the first cam, and only one operation piece is operated. It is possible to release the engagement of the locking claws with the belt. Further, since the width direction of the belt is not increased as is conventionally known, the size of the belt adjuster can be prevented from increasing.

10‧‧‧Belt adjuster

11‧‧‧Land

12‧‧‧Clock recess (locking part)

20‧‧‧ adjuster body

21‧‧‧Surface board

22‧‧‧ Back panel

23‧‧‧Upper panel

23a‧‧‧ below

24‧‧‧lower panel

25‧‧‧Belt insertion

26‧‧‧Operation piece insertion hole

27‧‧‧Slit

28‧‧‧Card tablets

29‧‧‧Card claws

30‧‧‧1st cam

40‧‧‧Operating film

43‧‧‧2nd cam

45‧‧‧Protection

46‧‧‧Spring fitting recess

48a‧‧‧Spring snap projection

48b‧‧‧Spring snap projection

50‧‧‧ coil spring (spring)

51‧‧‧ coil part

52‧‧‧foot

53‧‧‧foot

60‧‧‧Spring Department

70‧‧‧ Spring

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a surface view showing an embodiment of a belt adjuster of the present invention.

Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1.

Fig. 3 is a cross-sectional view taken along line B-B of Fig. 1.

Fig. 4 is a cross-sectional view taken along line C-C of Fig. 2.

Fig. 5 is a perspective view showing a state in which the surface plate and the belt are removed from Fig. 1.

Fig. 6 is a plan view showing a state in which the surface plate is removed from Fig. 1.

Figure 7 is an enlarged view of the vicinity of the coil spring of Figure 6.

Figure 8 is a right side view of the coil spring of Figure 7.

Figure 9 is a view showing that the locking piece is pushed up by the pressing of the operating piece A cross-sectional view of the state corresponding to FIG.

Fig. 10 is a cross-sectional view corresponding to Fig. 4, showing a state in which the locking piece is pushed up, and the locking claw of the locking piece is released from the locking concave portion of the belt.

Fig. 11 is a plan view corresponding to Fig. 6 for explaining a first modification of the embodiment of the belt adjuster of the present invention.

Fig. 12 is a plan view corresponding to Fig. 6 for explaining a second modification of the embodiment of the belt adjuster of the present invention.

[Formation for implementing the invention]

Hereinafter, an embodiment of the belt adjuster according to the present invention will be described in detail based on the drawings. In addition, in the following description, the upper side is the upper side with respect to the paper surface of FIG. 1, and the lower side is the lower side with respect to the paper surface of FIG. 1, and the right side is the right side with respect to the paper surface of FIG. The left side is the left side of the paper surface of Fig. 1, and the front side is the front side with respect to the paper surface of Fig. 1, and the back side is the back side with respect to the paper surface of Fig. 1.

As shown in FIGS. 1 to 4, the belt adjuster 10 of the present embodiment includes a belt 11, an adjuster body 20, an operation piece 40, and a coil spring (spring) 50 that presses the operation piece 40 upward. And configured to adjust the length of the belt 11 inserted in the left-right direction in the adjuster body 20. The adjuster body 20 and the operation piece 40 are formed by injection molding of a synthetic resin.

The belt 11 is formed into a thin plate shape having a small width by elastically deformable synthetic resin, leather, synthetic rubber or the like, and a plurality of rectangular locking recesses extending in the width direction of the belt 11 are formed in the surface thereof. (locking portion) 12.

The adjuster body 20 has a surface plate 21 and a back plate 22 which are disposed in parallel in the front and rear directions, an upper end portion of the upper surface portion 23 of the connection surface plate 21 and the rear surface plate 22, and a lower end of the connection surface plate 21 and the back surface plate 22. Below the panel 24.

Further, in the adjuster body 20, the belt insertion portion 25 drawn by the surface plate 21, the back panel 22, the upper panel 23, and the lower panel 24 is formed in the left-right direction, and the belt 11 is inserted through To the belt insertion portion 25.

Further, as shown in FIG. 2, in the upper panel 23 and the lower panel 24, an operation piece insertion hole 26 into which the operation piece 40 is slidably inserted is formed to penetrate in the vertical direction. Next, the sliding of the operation piece 40 is guided by the upper and lower operation piece insertion holes 26. Further, the belt insertion portion 25 is formed closer to the back panel 22 than the operation piece insertion hole 26. Therefore, the space in which the belt insertion portion 5 extends in the left-right direction and the space in which the operation piece insertion holes 26 are connected to the upper and lower sides are separated and cross-connected in the front and rear directions by the adjustment body 20. Therefore, the operation piece 40 can also be said to be configured to be slidable in the belt insertion portion 25.

Further, as shown in FIG. 1, a surface plate 21 is formed: formed The slit 27 of the font shape and the cantilever-shaped locking piece 28 that connects the right end portion to the surface plate 21. Further, as shown in FIG. 4, a locking claw 29 that extends toward the back panel 22 is formed at the front end portion of the locking piece 28, and the locking claw 29 is engaged with any one of the locking recesses 12 of the belt 11. Again, the so-called The sipe 27 of the shape is such that the upper side, the lower side, and the left side of the locking piece 28 are not connected to the surface plate 21 in FIG. 1, that is, the slit 27 is a slit hole penetrating the surface plate in the thickness direction. .

Further, as shown in FIG. 2, a first cam 30 that protrudes toward the operation piece 40 is formed in a substantially central portion in the lower direction of the back surface of the locking piece 28. The first cam 30 has an inclined surface 30a that gradually increases the amount of protrusion as it goes downward.

The operation piece 40 is as shown in FIG. 5 and FIG. 6, and has a plate-like portion 41 that is guided to the operation piece insertion hole 26 of the upper panel 23 and the lower panel 24 and slidably inserted; and is provided in the plate portion. The upper portion of the 41 is pressed from the operation piece insertion hole 26 of the upper panel 23 to press the operation portion 42 upward.

Further, as shown in FIG. 2, a second cam 43 that protrudes toward the locking piece 28 and abuts against the first cam 30 is formed on the surface of the plate-like portion 41. The second cam 43 presses the operation piece 40 downward, and presses the first cam 30 to push the locking piece 28 toward the front side.

Further, as shown in FIG. 5 and FIG. 6, the left and right side faces of the operation piece 40 are formed so as to be slightly inverted toward the left and right obliquely upwards. A pair of right and left retaining portions 45 that protrude in shape. The pair of right and left retaining portions 45 are elastically deformable in the left-right direction.

The pair of right and left retaining portions 45 are elastically deformed and widened in the left-right direction when the operation piece 40 is inserted into the operation piece insertion hole 26. The adjuster body 20 is attached to the adjuster body 20 through the operation piece insertion hole 26. In addition, after the sheet insertion hole 26 is operated, the elastic force is developed to expand in the left-right direction and widened, and each of them abuts against the lower surface 23a of the upper panel 23. Thereby, the operation piece 40 is prevented from falling off from the adjuster body 20.

Further, as shown in FIGS. 5 to 8, a spring fitting recess 46 that houses the holding coil spring 50 is formed in the operation piece 40. The spring fitting recess 46 is formed in an approximately U-shape that is formed to open in the right direction in FIG.

Further, a cylindrical spring fitting convex portion 47 is formed in the center of the U-shaped circular arc portion 46a of the spring fitting recess 46. Further, at the upper and lower open ends of the spring fitting recess 46, the pair of spring locking projections 48a and 48b are formed to protrude toward the inside of the spring fitting recess 46, respectively.

The coil spring 50 is a helical coil spring composed of a flexible metal wire. As shown in FIGS. 7 and 8, the coil spring 50 has a coil portion 51 and a pair of leg portions 52 and 53 extending from the coil portion 51. In the coil spring 50, the coil portion 51 is fitted into the spring fitting convex portion 47 and housed in the spring fitting recess portion 46. Thereby, the belt adjuster 10 can be made thinner because the thickness of the operation piece 40 can be suppressed to the minimum limit.

Further, the upper leg portion 52 abuts against the upper surface of the spring fitting recess 46, and the upper spring locks the projection 48a to prevent the spring fitting recess 46 from coming off. The lower leg portion 53 prevents the falling from the spring fitting recess portion 46 by the lower spring locking convex portion 48b. Further, the lower leg portion 53 is locked to the spring locking groove 31 formed on the upper surface of the lower panel 24 of the adjuster body 20. To this end, the operating piece 40 is based on the coil The spring force of the spring 50 is often pushed upward.

In the belt adjuster 10 configured as described above, as shown in FIGS. 2 and 4, the normal operation piece 40 is positioned above the pressing force of the coil spring 50. At this time, since the second cam 43 of the operation piece 40 does not press the first cam 30 of the locking piece 28, the locking claw 29 of the locking piece 28 is engaged with the locking recess of the belt 11 to restrict the left and right of the belt 11. The movement of the direction.

Further, when the length of the belt 11 is adjusted, as shown in FIGS. 9 and 10, the second cam of the operation piece 40 is pressed by pressing the operation piece 40 against the pressing force of the coil spring 50 (refer to the arrow direction D). The first cam 30 of the locking piece 28 is pressed, and the locking piece 28 is pushed toward the front side (refer to the arrow direction E). Thereby, the engagement of the locking claw 29 of the locking piece 28 with the locking concave portion 12 of the belt 11 is released, and the movement of the belt 11 in the left-right direction can be achieved.

At this time, since the first cam 30 is disposed at the center portion in the downward direction of the locking piece 28, the upper portion of the locking piece 28 is urged upward by the center portion, and the locking piece 28 is not twisted. In the case of the balance, the balance is pushed up. Therefore, the engagement of the locking claws 29 of the locking piece 28 with the locking recesses 12 of the belt 11 can be released by the amount of pushing up the minimum limit.

Further, after the belt length is adjusted, by pressing the urging operation piece 40, the operation piece 40 is moved upward according to the urging force of the coil spring 50, and the locking piece 28 is returned to the original position. Thereby, the locking claws 29 of the locking piece 28 are engaged with the locking recesses 12 of the belt 11 to restrict The movement of the belt 11 in the left and right direction. As a result, the length of the belt 11 can be easily adjusted by operating the operation piece 40. Moreover, in the case where the belt 11 is removed from the adjuster main body 20, the belt 11 may be pulled out from the adjuster main body 20 as long as the operation piece 40 is continuously pressed.

As described above, the belt adjuster 10 according to the present embodiment is such that the locking piece 28 has the first cam 30 that protrudes toward the operation piece 40, and the operation piece 40 has a projection toward the locking piece 28 and When the second cam 43 that the cam 30 abuts is operated, the locking claws 29 of the locking piece 28 and the locking recesses 12 of the belt 11 can be released by operating one operation piece 40. Further, since the width direction of the belt is not increased as is conventionally known, it is possible to prevent the belt adjuster 10 from being enlarged.

Further, according to the belt adjuster 10 of the present embodiment, the operation piece 40 has the spring fitting recess 46 that holds the coil spring 50, and the spring fitting recess 46 has one of the leg portions 52, 53 that respectively lock the coil spring 50. The spring locking projections 48a, 48b can prevent the coil spring 50 from coming off the operation piece 40 at the time of assembly of the belt adjuster 10, and the assembly of the belt adjuster 10 can be improved. Further, since the coil spring 50 is housed in the spring fitting recess 46, the thickness of the operation piece 40 can be suppressed to the minimum limit, and the belt adjuster 10 can be made thinner.

Moreover, the belt adjuster 10 according to the present embodiment has a width that is elastically deformed when inserted into the operation piece insertion hole 26, and is widened in the left-right direction after insertion, and is combined with the upper panel 23 The lower 23a abuts the left and right pair of retaining portions 45, so on the belt When the adjuster 10 is assembled, the operation piece 40 can be attached to the adjuster body 20 as long as the operation piece 40 is inserted into the operation piece insertion hole 26. Therefore, the assembly of the belt adjuster 10 can be improved.

Further, according to the belt adjuster 10 of the present embodiment, since the slide of the operation piece 40 is guided by the upper and lower operation piece insertion holes 26, the operation of the operation piece 40 can be smoothly performed, and the belt adjuster 10 can be lifted. Operational.

Further, as a first modification of the embodiment, as shown in FIG. 11, the spring fitting recess 46 and the spring spring 50 are removed from the above-described embodiment, and the operation piece 40 is integrally formed at the lower end portion of the operation piece 40. The thin plate-shaped spring portion 60 is pressed, and the bottom plate 61 that receives the elastic force of the spring portion 60 may be formed at the lower end portion of the lower operation piece insertion hole 26. Thereby, the operation piece insertion hole 26 is formed in a concave shape. Moreover, the front end portion 60a of the spring portion 60 is formed in a circular shape or a spherical shape.

Further, as a second modification of the embodiment, as shown in FIG. 12, a coil spring 50 of a spiral coil spring may be used instead of a normal U-shaped or J-shaped spring 70. The spring 70 has a curved portion 71 and a pair of leg portions 72 and 73 extending from the curved portion 71, and is housed in the spring fitting recess 46 like the coil spring 50.

The present invention is not limited to the embodiments described above, and may be appropriately modified without departing from the scope of the invention.

For example, in the above-described embodiment, the adjuster body 20 and the operation piece 40 are made of synthetic resin, but are not limited thereto, and may be made of metal.

Further, in the above embodiment, the plurality of locking recesses 12 of the belt 11 Although it is a rectangular recessed part, it is not limited to this, and it is a continuous unevenness of the zigzag shape.

Further, in the above embodiment, the slit 27 is formed as The font is not limited thereto, and may be a C-shape or a semi-ellipse type, and its shape is arbitrary.

10‧‧‧Belt adjuster

11‧‧‧Land

12‧‧‧Clock recess (locking part)

20‧‧‧ adjuster body

21‧‧‧Surface board

23‧‧‧Upper panel

23a‧‧‧ below

24‧‧‧lower panel

26‧‧‧Operation piece insertion hole

27‧‧‧Slit

28‧‧‧Card tablets

30‧‧‧1st cam

40‧‧‧Operating film

41‧‧‧ Board

42‧‧‧Pressing operation department

43‧‧‧2nd cam

45‧‧‧Protection

Claims (7)

A belt adjuster (10) comprising: a belt (11) having a plurality of locking portions (12) formed on a surface thereof; and a surface plate (21) and a back plate (22) which are disposed in parallel in the front and rear directions a top plate (23) connecting the upper surface of the front surface plate (21) and the back surface plate (22), and a lower end plate (24) connecting the front surface plate (21) and the back surface plate (22) And using the surface plate (21), the back plate (22), the upper panel (23), and the lower panel (24) to insert the belt insertion portion (25) inserted through the belt (11) a regulator body (20) formed in a direction; and an operation piece (40) configured to be slidable in the belt insertion portion (25), the surface plate (21) having a slit (27) formed and left and right a cantilever-shaped locking piece (28) connected to the surface plate (21) at one end of the direction, the locking piece (28) having the aforementioned locking with the belt (11) at the front end portion The belt adjuster (10) of the engaging claw (29) of the engaging portion (12) is characterized in that the locking piece (28) has a first cam (30) protruding toward the operating piece (40). The aforementioned operation piece (40) has A second cam (43) that protrudes toward the locking piece (28) and abuts against the first cam (30). Such as the belt adjuster (10) of claim 1 of the patent scope, wherein A spring (50, 70) for pressing the operation piece (40) in either of the up-and-down directions is provided, and the operation piece (40) has a spring fitting recess (46) for holding the springs (50, 70). The belt adjuster (10) of claim 2, wherein the spring fitting recess (46) has one leg portion (52, 72) and the other leg that respectively lock the spring (50, 70) One of the portions (53, 73) engages the spring latching projections (48a, 48b). A belt adjuster (10) according to claim 2 or 3, wherein the spring (50) is a helical coil spring. A belt adjuster (10) according to the first aspect of the invention, further comprising a spring (70) for pressing the operation piece (40) in one of the up-and-down directions. The belt adjuster (10) according to any one of claims 1 to 5, wherein the operation piece (40) is inserted into the operation piece insertion hole of the upper panel (23) and the lower panel (24) (26) The operation piece (40) has a width that is elastically deformed in the left-right direction when inserted into the operation piece insertion hole (26), and is widened in the left-right direction after insertion, and is extended to the upper panel ( The lower (23a) of the 23) abuts the pair of left and right retaining portions (45). The belt adjuster (10) according to the first or sixth aspect of the invention, wherein the operation piece (40) is integrated with a spring portion (60) that presses the operation piece (40) in either one of the up and down directions. .