Knob structure for adjusting tightness and locking of head lamp bandage through knob

Abstract

The utility model relates to the technical field of mobile lighting, in particular to a knob structure for adjusting the tightness and locking of a head lamp bandage through a knob, which comprises a battery box and a knob, a circle of rectangular clamping groove is arranged in the middle of the battery box, a long-strip protrusion is arranged in the center of the knob, arc-shaped holes are arranged at two ends of the long-strip protrusion, and the arc-shaped holes are communicated with the battery box. The two ends of the arc-shaped hole are provided with inclined faces, a gear is further included, the outer ring of the gear is fixedly connected with four elastic arms, the ends of the elastic arms are fixedly connected with first ratchets, second ratchets, third ratchets and fourth ratchets respectively, and the ratchets penetrate through the arc-shaped hole to be clamped in the clamping grooves. When the rotary knob is rotated forwards and backwards, the ratchets in different directions are pushed to be separated from the clamping grooves, the gear is pushed to rotate, the rack is driven to slide, when the rotary knob is not rotated, the bidirectional ratchets and the clamping grooves are clamped, the rack is locked, the headlamp belt can be tightened and loosened by rotating the rotary knob forwards and backwards, locking is achieved by releasing hands, operation is convenient, and logic is clear.

Description

TECHNICAL FIELD

[0001] The utility model relates to mobile lighting technical field especially for a knob structure that knob adjusts headlamp binding band tightness and locks. BACKGROUND

[0002] The headlamp is a kind of portable lighting tool, usually designed with adjustable rotating buckle, so that user can fix it on head, so that still can keep lighting when needing to carry out other tasks with both hands. The rotating buckle of the tightness of the current market is adjusted, when needing to adjust the rope, need to pull out or carry out other operations to the rotating buckle, and the rope can be loose, thereby, bring many problems to user, for example, it is difficult to pull out the rotating buckle outward with one hand, user needs to use the other hand or other tools to assist operation, increase the complexity of use, greatly reduce the user experience, in view of this, provide a knob structure that knob adjusts headlamp binding band tightness and locks. SUMMARY

[0003] The utility model is mainly to provide a knob structure that knob adjusts headlamp binding band tightness and locks to solve the problems in the related art.

[0004] In order to achieve the above object, according to one aspect of the utility model, a knob structure that knob adjusts headlamp binding band tightness and locks is provided, including battery box and knob, the middle part of battery box is provided with a circle of clamping groove, the clamping groove is rectangular, the central part of knob is provided with a long strip protrusion, the two ends of long strip protrusion are provided with arc-shaped holes, and the two ends of arc-shaped hole are provided with inclined surface, further including: gear, four elastic arms are fixedly connected on the outer circle of gear, and the ends of elastic arms are respectively fixedly connected with first ratchet, second ratchet, third ratchet and fourth ratchet, wherein the first ratchet and the second ratchet are opposite and opposite in direction, the third ratchet and the fourth ratchet are opposite and opposite in direction, and the ratchet is clamped in the clamping groove through the arc-shaped hole.

[0005] As a preferred technical scheme of the utility model: the battery box is provided with a threaded hole matched with the support, the support is locked and fixed with the battery box through support screw, and the knob is fixed on the battery box by the support.

[0006] As a preferred technical scheme of the utility model: the gear back is provided with a groove, the two ends of the groove are fan-shaped, the long strip protrusion on the knob is installed in the groove, and the middle part of the gear is exposed in the hole in the middle part of the support.

[0007] As a preferred technical scheme of the utility model: the support is provided with a rack on the left and right, the rack is provided with a strip-shaped tooth groove, the strip-shaped tooth groove is engaged with the gear, and the other end of the rack is provided with a connecting hole, which can be connected and fixed with the headlamp belt.

[0008] As a preferred technical scheme of the utility model: the support is matched with a support cover, the support cover covers the rack and is locked and fixed with the support through support cover screws.

[0009] As a preferred technical scheme of the utility model: the first ratchet tooth, the second ratchet tooth, the third ratchet tooth and the fourth ratchet tooth are upwardly inclined, and the inclined surfaces at both ends of the arc-shaped hole of the knob are in the same direction with the ratchet teeth inside it.

[0010] Compared with the prior art, the utility model is through the mutual cooperation of the bidirectional ratchet teeth, and the bidirectional ratchet teeth push the ratchet teeth in different directions to separate from the clamping groove when the knob is rotated in the positive direction and the negative direction, drive the gear to rotate, drive the rack to slide, when the knob is not rotated, the bidirectional ratchet teeth are clamped with the clamping groove, lock the rack, and the headlamp belt can be tightened and loosened by rotating the knob in the positive direction and the negative direction, and the headlamp belt is locked when hands are released, so that the operation is convenient, and the logic is clear. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the knob structure schematic view of the utility model preferred embodiment that the knob adjusts headlamp binding belt tightness and locks;

[0012] Figure 2 It is the battery box schematic view of the utility model preferred embodiment;

[0013] Figure 3 It is the knob structure schematic view of the utility model preferred embodiment;

[0014] Figure 4 It is the gear front face and back face structure schematic view of the utility model preferred embodiment;

[0015] Figure 5 It is the rack structure schematic view of the utility model preferred embodiment;

[0016] Figure 6 It is the overall knob structure schematic view of the utility model preferred embodiment.

[0017] Brief Description of Drawings: 1, battery box; 2, knob; 21, long protrusion; 22, arc-shaped hole; 23, inclined surface; 3, gear; 31, elastic arm; 32, first ratchet tooth; 33, second ratchet tooth; 34, third ratchet tooth; 35, fourth ratchet tooth; 36, recess; 4, support; 5, support screw; 6, rack; 61, strip-shaped tooth groove; 62, connecting hole; 7, support cover; 8, support cover screw. DETAILED DESCRIPTION

[0018] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0019] Please refer to Figures 1-6 The embodiment aims to provide a knob structure for adjusting the tightness of headlamp belt and locking. The knob structure comprises a battery box and a knob 2. A clamping groove 11 is formed in the middle of the battery box 1. The clamping groove 11 is rectangular. A long protrusion 21 is arranged in the center of the knob 2. Arc-shaped holes 22 are formed at the two ends of the long protrusion 21. Inclined surfaces 23 are arranged at the two ends of the arc-shaped holes 22. The knob structure further comprises a gear 3. Four elastic arms 31 are fixedly connected to the outer ring of the gear 3. First, second, third and fourth ratchet teeth 32, 33, 34 and 35 are respectively fixedly connected to the ends of the elastic arms 31. The first ratchet tooth 32 is opposite to the second ratchet tooth 33 and has opposite directions. The third ratchet tooth 34 is opposite to the fourth ratchet tooth 35 and has opposite directions. The ratchet teeth are clamped in the clamping groove 11 through the arc-shaped holes 22. The first, second, third and fourth ratchet teeth 32, 33, 34 and 35 are upwardly inclined. The inclined surfaces 23 at the two ends of the arc-shaped holes 22 of the knob 2 have the same direction as the ratchet teeth inside the knob 2.

[0020] A threaded hole is formed in the battery box 1 and matched with the support 4. The support 4 is fixedly connected to the battery box 1 through a support screw 5. The knob 2 is fixedly arranged on the battery box 1 by the support 4. A recess 36 is arranged at the back of the gear 3. The two ends of the recess are fan-shaped. The long protrusion 21 on the knob 2 is arranged in the recess 36. A hole is formed in the middle of the support 4, so that the middle part of the gear 3 is exposed.

[0021] Two racks 6 are arranged on the left and right of the support 4. A strip-shaped tooth groove 61 is arranged on the rack 6. The strip-shaped tooth groove 61 is engaged with the gear 3. A connecting hole 62 is arranged at the other end of the rack 6, so that the rack 6 is fixedly connected with the headlamp belt. A support cover 7 is arranged in the support 4. The support cover 7 covers the rack 6 and is locked and fixed to the support 4 through a support cover screw 8.

[0022] Experimental principle: when the knob 2 is not rotated, the first, second, third and fourth ratchet teeth 32, 33, 34 and 35 are inserted in the clamping groove 11, so that the two directions are clamped and the gear 3 cannot be rotated. The strip-shaped tooth groove 61 is arranged on the rack 6 and engaged with the gear 3, so that the two racks 6 are also fixed and cannot be stretched.

[0023] When the knob 2 is rotated clockwise, the long protrusion 2 has a certain rotating space in the fan-shaped recess 3. At this time, the gear 3 is not moved. The inclined surfaces 23 will lift the second and fourth ratchet teeth 33 and 35. When the second and fourth ratchet teeth 33 and 35 are lifted, they will be separated from the clamping groove 11. The long protrusion 2 is further rotated to push the gear 3 to rotate clockwise. The gear 3 drives the two racks 6 to slide leftward and rightward respectively. The rack 6 slides outward to increase the circumference of the headlamp belt, so as to relax the headlamp belt.

[0024] When the knob 2 is rotated counterclockwise, the long convex 21 also has a certain rotation space in the fan-shaped groove 36, at this time the gear 3 is not moved, the inclined surface 23 will lift the first ratchet 32 and the third ratchet 34, when the first ratchet 32 and the third ratchet 34 are separated from the clamping groove 11, the long convex 21 is further rotated to push the gear 3 counterclockwise, the gear 3 drives the two racks 6 to slide in opposite directions, the sliding of the rack makes the headlamp belt circumference decrease, so as to tighten the headlamp belt.

[0025] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments, as long as the changes or modifications do not deviate from the technical scheme of the present application. Any modification, equivalent change and modification of the above embodiments, which does not deviate from the technical scheme of the present application, is still within the scope of the present application.

Claims

1. A knob structure for adjusting the tightness and locking of a headlamp strap with a knob, comprising a battery box (1) and a knob (2), characterized in that: The battery box (1) middle part is provided with a circle of clamping groove (11), the clamping groove (11) is rectangular, the knob (2) center part is provided with a long strip protrusion (21), the long strip protrusion (21) both ends are provided with arc hole (22), arc hole (22) both ends are provided with inclined plane (23); Gear (3), the gear (3) outer circle is fixedly connected with four elastic arms (31), the end of elastic arm (31) is fixedly connected with first ratchet (32), second ratchet (33), third ratchet (34), fourth ratchet (35), wherein the first ratchet (32) and the second ratchet (33) are opposite, the direction is opposite, the third ratchet (34) and the fourth ratchet (35) are opposite, the direction is opposite, the ratchet is clamped in the clamping groove (11) through the arc hole (22).

2. The knob structure for tightening and locking the headlamp strap according to claim 1, wherein The battery box (1) is provided with a threaded hole matched with the support (4), the support (4) is locked and fixed with the battery box (1) through support screw (5), the knob (2) is fixed on the battery box (1) by the support (4).

3. The knob structure for tightening and locking the headlamp band according to claim 2, wherein The gear (3) back is provided with a groove (36), the both ends of the groove are fan-shaped, the long strip protrusion (21) on the knob (2) is installed in the groove (36), the middle part of the gear (3) is exposed by the hole in the middle part of the support (4).

4. The knob structure for tightening and locking the headlamp band according to claim 2, wherein The support (4) is provided with a rack (6) on the left and right, the rack (6) is provided with a strip-shaped tooth groove (61), the strip-shaped tooth groove (61) is engaged with the gear (3), the other end of the rack (6) is provided with a connecting hole (62), which can be connected and fixed with the headlamp belt.

5. The knob structure for tightening and locking the headlamp band according to claim 2, wherein The support (4) is provided with a support cover (7), the support cover (7) covers the rack (6) and is locked and fixed with the support (4) through support cover screw (8).

6. The knob structure for tightening and locking the headlamp band according to claim 1, wherein The first ratchet (32), the second ratchet (33), the third ratchet (34) and the fourth ratchet (35) are inclined upward, the inclined plane (23) at both ends of the arc hole (22) on the knob (2) is in the same direction with the ratchet inside.

Images