CN220237708U - Novel swimming goggles bandeau adjusts structure - Google Patents

Abstract

The utility model discloses a novel swimming goggles head band adjusting structure which comprises a front cover, a rear cover, racks, gears and a knob, wherein the front cover is provided with an upper chute and a lower chute which are matched with the racks, the chute penetrates through the left end and the right end of the front cover, the racks are slidably arranged in the chute, and the gears are meshed with the racks for transmission. The adjusting mechanism can realize the contraction and release operation of the rack through the single-hand operation knob, has the advantages of simple structure and easy adjustment, and the elastic arm pushes the pawl to be in contact with the straight-tooth ratchet teeth so as to have an elastic self-locking function.

Description

Novel swimming goggles bandeau adjusts structure

Technical Field

The utility model belongs to the technical field of protective articles for sports projects, and particularly relates to a headband adjusting structure applied to swimming goggles.

Background

In summer, the sun is a good day for swimming. The children can be brought to swim, and the summer heat can be avoided and the children can be cooled; can also strengthen the body and eliminate fatigue in work; and the parent-child relationship can be improved. And thus are increasingly being favored. Swimming goggles are already the standard of swimming lovers. Traditional swimming goggles have troublesome adjustment of the headband; various adjusting modes can not be used by both hands, and the most suitable and comfortable position can not be adjusted.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the headband adjusting structure is simple in structure, easy to assemble, simple to use and capable of achieving adjustment by one hand.

In order to solve the technical problems, the utility model is realized by the following technical scheme: the utility model provides a novel swimming goggles bandeau adjusting structure, includes protecgulum, hou gai, rack, gear and knob, be provided with two upper and lower and rack matched with spouts on the protecgulum, the spout link up the protecgulum about both ends, rack slidable mounting is in the spout, protecgulum central point puts the department and sets up the first through-hole that has straight tooth ratchet teeth, the fixed reference column that is provided with in back lid central point put department, back lid fixed mounting is covered in the protecgulum, gear rotation cup joints and installs on the reference column, gear and rack meshing transmission, gear both sides mirror image is provided with the bullet arm, bullet arm upper portion and lower part are provided with first arch, second arch, be provided with on the bullet arm with straight tooth ratchet teeth matched with pawl, knob upper portion and lower part are provided with guiding hole and spacing groove, first arch, second arch are arranged in guiding hole, spacing inslot respectively, the knob rotates and installs on the reference column, the outside thread connection of reference column cup joints and installs the anticreep screw that is used for restricting the knob outwards to deviate from.

Preferably, the outer end of the rack is provided with a third through hole.

Preferably, the outer end of the knob is fixedly buckled and provided with a protective cover.

Preferably, the guide hole is an arc hole structure coaxially arranged with the gear, and the aperture size of the guide hole is 1-2mm larger than the diameter size of the first protrusion.

Preferably, the radian of the guide hole is set to 35-45 degrees.

Preferably, the maximum rotation angle of the limiting groove relative to the second protrusion is 25 degrees to 33 degrees.

Preferably, the radial dimension of the limiting groove passing through the center of the gear is 1.5-2.5 times of the diameter dimension of the second protrusion.

Preferably, the circumference surface of the protective cover is provided with anti-skid patterns.

Preferably, the upper and lower surfaces of the rack are abutted against the upper and lower surfaces of the chute.

Preferably, the spring arm is arranged in an arc-shaped structure coaxial with the gear, and the pawl is arranged at a position 1/6-1/3 of the distance from the outer end of the spring arm.

Compared with the prior art, the utility model has the following advantages: the adjusting mechanism can realize the contraction and release operation of the rack through the single-hand operation knob, has the advantages of simple structure and easy adjustment, and the elastic arm pushes the pawl to be in contact with the straight-tooth ratchet teeth so as to have an elastic self-locking function.

Drawings

The utility model is further described below with reference to the accompanying drawings.

Fig. 1 is an exploded view of the present utility model.

Fig. 2 is a schematic view of the internal structure of the present utility model.

Fig. 3 is a front view of the present utility model.

Fig. 4 is a perspective view of the front cover.

Fig. 5 is a perspective view of the rear cover.

Fig. 6 is a perspective view of a gear.

Fig. 7 is a perspective view of the knob.

Fig. 8 is a bottom view of the present utility model.

Fig. 9 is an enlarged schematic view of the structure at M of fig. 8.

Detailed Description

The utility model is described in detail below in connection with specific embodiments:

the utility model provides a novel swimming goggles bandeau adjusting structure as shown in fig. 1 through 9, includes protecgulum 1, hou gai 2, rack 3, gear 4 and knob 5, be provided with two upper and lower and rack 3 matched with spout 12 on the protecgulum 1, spout 12 link up protecgulum 1 left and right sides both ends, rack 3 slidable mounting is in spout 12, protecgulum 1 central point puts and sets up the first through-hole that has straight tooth ratchet tooth 11, back lid 2 central point puts the fixed reference column 21 that is provided with, back lid 2 fixed mounting is on protecgulum 1, gear 4 rotates and cup joints and install on reference column 21, gear 4 is through its gear tooth 41 and rack 3 meshing transmission, gear 4 both sides mirror image is provided with spring arm 42, spring arm 42 upper portion and lower part are provided with first arch 421, second arch 422, spring arm 42 upper portion and lower part are provided with straight tooth ratchet 11 matched with pawl 423, be provided with guiding hole 51 and spacing groove 52 on 5, first arch 421, second arch 421 and second arch 421 are arranged in the knob 21, the knob 5 is arranged in the guide hole, and is arranged in the knob 21 to the outside the spacing groove that is cup joints to the knob 5, and is used for the knob is installed to the outside the spacing groove of knob 21, and is outside the knob is cup jointed to the knob is used for the location groove to the 5.

The outer end of the rack 3 is provided with a third through hole 31, and the rack 3 is connected with the swimming goggles body through the third through hole 31.

The knob 5 outer end fixed lock installation is provided with shield cover 6, be provided with anti-skidding line on the periphery of shield cover 6, can shelter from the protection to knob 5 through shield cover 6, anti-skidding line can make shield cover 6 surface have anti-skidding characteristic, and the user of being convenient for carries out rotary operation to shield cover 6.

The guide hole 51 is an arc hole structure coaxially arranged with the gear 4, and the aperture size of the guide hole 51 is larger than the diameter size of the first protrusion 421 by 1.5mm, so that the problem of jamming caused by relative rotation of the guide hole 51 and the first protrusion 421 can be avoided by adopting the above design structure when the knob 5 and the gear 4 rotate relatively.

The radian of the guide hole 51 is set to 40 degrees, so that after the knob 5 and the gear 4 relatively rotate for 40 degrees, the knob 5 pushes the first protrusion 421 to drive the gear 4 to synchronously rotate.

The maximum rotation angle of the limiting groove 52 relative to the second protrusion 422 is 29 degrees, the radial dimension of the limiting groove 52 passing through the center direction of the gear 4 is 2 times the diameter dimension of the second protrusion 422, and when the knob 5 and the gear 4 can relatively rotate, the limiting groove 52 can drive the second protrusion 422 to enable the elastic arm 42 to shrink inwards, so that the pawl 423 is separated from the straight-tooth ratchet teeth 11.

The upper surface and the lower surface of the rack 3 are tightly adhered to the upper surface and the lower surface of the chute 12, so that the rack 3 can be ensured to be meshed with the gear 4 all the time, and the separation of the rack 3 and the gear 4 in a transmission or static state is avoided.

The elastic arm 42 is in an arc structure coaxial with the gear 4, and the pawl 423 is arranged at a position 1/5 of the elastic arm 42 away from the outer end of the elastic arm, so that the outer end of the elastic arm 42 is convenient to separate from the straight-tooth ratchet teeth 11 when the outer end of the elastic arm 42 is bent inwards under the action of the limiting groove 52 pulling the first protrusion 421.

The following describes two movement directions, namely forward rotation and reverse rotation:

forward rotation: under the elastic force reset action of the spring arm 42, when the knob 5 is not rotated, as shown in fig. 9, when the knob 5 rotates clockwise, there is a movable gap between the guide hole 51 on the knob 5 and the first protrusion 421, and between the limit groove 52 and the second protrusion 422, so that the knob 5 rotates first. The second bulge 422 on the right drives the right elastic arm 42 to bend and deform under the pushing action of the limiting groove 52, namely, the second bulge 422 contracts inwards along the arc surface on the outer side of the limiting groove 52, so that the pawl 423 on the right elastic arm 42 is completely separated from the straight-tooth ratchet teeth 11, after the second bulge 422 on the left moves in the left limiting groove 52 to the edge of the right, the left limiting groove 52 pushes the second bulge 422 to drive the left elastic arm 42 to bend to a smaller extent than the left, the pawl 423 on the left elastic arm 42 is separated from the straight-tooth ratchet teeth 11 by a small amount, at the moment, the pawl 423 on the left contacts with the straight-tooth ratchet teeth 11 by a small amount, and at the same time, after the first bulge 421 contacts with the end part of the guide hole 51, the gear 4 is driven to be meshed with the rack 3 through the knob 5, and at the moment, the gear teeth 41 on the gear 4 drive the rack 3 to contract inwards, so that the tightening function is realized.

Reversing: under the elastic force resetting action of the spring arm 42, when the knob 5 is not rotated, as shown in the state of fig. 9, when the knob 5 is rotated counterclockwise, the movement state of the whole mechanism is opposite to that of the clockwise. At this time, the gear teeth 41 on the gear 4 drive the rack 3 to extend outwards, so as to realize the function of releasing the headband.

Claims (10)

1. Novel swimming goggles bandeau adjusts structure, its characterized in that: the novel ratchet wheel comprises a front cover (1), a rear cover (2), racks (3), gears (4) and a knob (5), wherein two sliding grooves (12) matched with the racks (3) are arranged on the front cover (1), the sliding grooves (12) penetrate through the left end and the right end of the front cover (1), the racks (3) are slidably arranged in the sliding grooves (12), a first through hole with straight-tooth ratchet teeth (11) is arranged at the central position of the front cover (1), a positioning column (21) is fixedly arranged at the central position of the rear cover (2), the rear cover (2) is fixedly arranged on the front cover (1), the gears (4) are rotatably sleeved on the positioning column (21), the gears (4) are meshed with the racks (3), spring arms (42) are arranged on two sides of the gears in a mirror image mode, first protrusions (421) and second protrusions (422) are arranged on the upper portions and the lower portions of the spring arms (42), a pawl (11) matched with the straight-tooth ratchet teeth (423), a second protrusion (52) is arranged on the second protrusion (422), a guide hole (52) is formed in the guide hole (51), and the second protrusion (52) is arranged in the guide hole (52), the knob (5) is rotatably sleeved on the positioning column (21), and an anti-falling screw rod for limiting the knob (5) from falling outwards is arranged at the outer end of the positioning column (21) in a threaded connection mode.

2. The novel swimming goggles headband adjustment structure of claim 1, wherein: the outer end of the rack (3) is provided with a third through hole (31).

3. The novel swimming goggles headband adjustment structure of claim 1, wherein: the outer end of the knob (5) is fixedly buckled and provided with a protective cover (6).

4. The novel swimming goggles headband adjustment structure of claim 1, wherein: the guide hole (51) is of an arc-shaped hole structure coaxially arranged with the gear (4), and the aperture size of the guide hole (51) is 1-2mm larger than the diameter size of the first protrusion (421).

5. The novel swimming goggles headband adjustment structure of claim 4, wherein: the radian of the guide hole (51) is set to be 35-45 degrees.

6. The novel swimming goggles headband adjustment structure of claim 1, wherein: the maximum rotation angle of the limiting groove (52) relative to the second protrusion (422) is 25-33 degrees.

7. The novel swimming goggles headband adjustment structure of claim 6, wherein: the radial dimension of the limiting groove (52) passing through the center direction of the gear (4) is 1.5-2.5 times of the diameter dimension of the second protrusion (422).

8. A novel swimming goggles headband adjustment structure according to claim 3, wherein: the circumference of the protective cover (6) is provided with anti-skid patterns.

9. The novel swimming goggles headband adjustment structure of claim 1, wherein: the upper surface and the lower surface of the rack (3) are closely attached to the upper surface and the lower surface of the chute (12).

10. The novel swimming goggles headband adjustment structure of claim 1, wherein: the spring arm (42) is arranged in an arc-shaped structure coaxial with the gear (4), and the pawl (423) is arranged at a position 1/6-1/3 of the spring arm (42) away from the outer end part of the spring arm.