TWM545673U - Shrunk band tightening device - Google Patents

Description

Belt tightening device

The present invention provides a technical field of a tight-wound device, and more particularly, it provides a band tightening device.

The invention application of the "Belt Tensioning System" of the Chinese Patent Application No. 201380056311.3, the application of which includes a frame having a first side arm for holding a protrusion; a mandrel on the frame, An end portion configured to receive a strap for binding cargo; a drive shaft; a gear transmission assembly including a worm and a worm gear driven by the drive shaft, the drive shaft operable to drive the gear transmission assembly, Rotating the mandrel; and a crank handle associated with the drive shaft, the body of the crank handle having a length extending from the drive shaft to a free end, the free end of the crank handle being An arm is pivotally supported between the operating and locking positions, the arms being configured to align with the projections in the frame when in the locked position to prevent rotation of the crank handle and the drive shaft.

However, in the above-mentioned conventional case, although the purpose of tightening the belt can be achieved, the worm wheel is 16 teeth, so the worm has to turn 16 worm wheels for one turn. It takes a lot of time to completely tighten, and the number of turns to be rotated is quite high. Quite slow. The crank can not be stretched to achieve a labor-saving effect.

Therefore, in view of the problems existing in the above-mentioned conventional structure, how to develop an innovative structure that is more ideal and practical, the consumers are eagerly awaiting, and the relevant industry must strive to develop the goal and direction of breakthrough.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After the detailed design and careful evaluation of the above objectives, the creator will have a practical and practical creation.

The main purpose of the present invention is to provide a strap tightening device which utilizes a helical gear with a gear ratio of 1:2 to achieve a fast take-up or rewinding reversal effect, and a ratchet pawl group prevents automatic retraction. The handle set has three functions of positive, negative and idling, which can make the handle set return to a specific designated position; the retractable handle set has the functions of saving labor and saving storage space.

In order to achieve the above object, the present invention provides a strap tightening device, which comprises: a body, the body includes first and second side walls, and a main shaft group is pivoted through the first and second side walls, and the main body is different from the main shaft group side. The rod body is provided for fixing the front end of the belt, the spindle group includes a ratchet wheel and a first helical gear at one end of the main shaft, and the main shaft, the ratchet wheel and the first helical gear are integrally formed, and the belt slot is arranged on the main shaft; a second helical gear is fixed on the shaft, the second helical gear is meshed with the first helical gear, and the transmission shaft is pivoted to a side of the body, a handle set, and the handle set is connected to the transmission The moving shaft, the rotation of the handle group can drive the transmission shaft to rotate, a set of pawls, the set of pawls is pivoted to the side of the body, and the pawls of the pawl set are properly inserted into the ratchet slots, the first and second gears The gear ratio is 1:2, the handle set rotates two turns of the spindle set one turn, the tightening speed is quite fast, the tape can be reeled quickly and the strap can be reversed, and the body is provided with an eccentric cam as a self-locking function of the pawl set, the pawl The group can prevent the automatic reverse rotation, the handle group can be three-stage function of positive, reverse and idling. The handle set has the function of telescopic handle, and the telescopic setting is set to a high-low-order limit sliding groove and a large gap at both ends of the limit sliding groove. The spring is pressed against the guide rod so that the handle group can be surely fixed and does not slip off.

With regard to the techniques, means and functions of the present invention, a preferred embodiment is described in detail with reference to the drawings, and it is believed that the above objects, structures and features of the present invention can be obtained from an in-depth and specific understanding. .

10‧‧‧ Ontology

11‧‧‧First side wall

12‧‧‧ second side wall

13‧‧‧ rod body

14‧‧‧dump

15‧‧‧Fixed slot

16‧‧‧ Hollow riveting pin

20‧‧‧ Spindle set

21‧‧‧ Spindle

211‧‧‧Belt slot

22‧‧‧ ratchet

221‧‧‧ratchet slots

222‧‧‧ ratchet teeth

23‧‧‧First helical gear

30‧‧‧Drive shaft

31‧‧‧Second helical gear

40‧‧‧Handle set

41‧‧‧ratchet sleeve

42‧‧‧ ratchet block

43‧‧‧Steel spring

44‧‧‧Handle

441‧‧‧First guide

442‧‧‧Second guide

443‧‧‧Small spring

45‧‧‧Extension handle

451‧‧‧Limited sliding trough

4511‧‧‧ Large gap

46‧‧‧ Grip

50‧‧‧Pawl group

51‧‧‧ pawl

511‧‧‧thorn tip

52‧‧‧Torque spring

53‧‧‧Eccentric cam

54‧‧‧Limited shape block

55‧‧‧ shaft

56‧‧‧华司

60‧‧‧ protective cover

70‧‧‧Belt

The first figure is a three-dimensional schematic diagram of the embodiment of the present invention in which the grip is received to the body limiting slot.

The second figure is a perspective view of an embodiment of the present invention after removing the protective cover.

The third figure is a three-dimensional schematic diagram of an embodiment of the present invention combined with a protective cover.

The fourth figure is a perspective exploded view of an embodiment of the present creation.

The fifth figure is a perspective view in which the handle of one embodiment of the present invention is reduced to the shortest.

The sixth figure is a perspective view of the handle of the present embodiment pulled to the longest.

The seventh figure is an embodiment of the present embodiment in which the ratchet block is cut to the forward rotation state. Schematic diagram.

The eighth figure is a schematic plan view of the embodiment in which the ratchet block is cut to the idling state.

The ninth drawing is a plan view showing the state in which the ratchet block is cut to the reverse transmission state in one embodiment of the present invention.

The tenth figure is a plan view showing the self-locking state of the pawl group of one embodiment of the present invention.

The eleventh figure is a schematic view showing the action of the ratchet teeth to disengage the pawl when the spindle set of the embodiment is driven to rotate.

The twelfth figure is a schematic view showing the action of the pawl being properly inserted into the ratchet tooth groove when the spindle set of the embodiment is driven to rotate.

The thirteenth drawing is a perspective view of an embodiment of the present invention with an end band.

This creation provides a designer of a strap tightening device.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, the implementation method and the schema are as follows: See the first to the thirteenth figures, this creation provides a bundle The belt tightening device comprises: a body 10, the body 10 includes first and second side walls 11, 12, a front side of the body 10 is provided with a rod body 13 for fixing one end of the belt 70; a spindle group 20, the spindle Group 20 runs through the first, The two side walls 11 and 12 are pivoted. The spindle group 20 includes a spindle 21. One end of the spindle 21 is provided with a ratchet 22 and a first helical gear 23, and the spindle 21, the ratchet 22 and the first helical gear 23 are integrally formed. The main shaft 21 is provided with a belt slot 211; a transmission shaft 30, the transmission shaft 30 is pivoted to the side of the body 10, and a second helical gear 31 is fixed on the transmission shaft 30, and the second The helical gear 31 meshes with the first helical gear 23 and has a gear ratio of 1:2; a handle set 40, the handle set 40 is coupled to the transmission shaft 30, and the handle set 40 rotates to drive the transmission shaft 30 to rotate; And a pawl set 50, the pawl set 50 is pivoted to the side of the body 10, and the pawl 51 of the pawl set 50 is engaged with the ratchet slot 221 of the ratchet 22 to prevent the spindle set 20 from being reversed.

The present invention provides a strap tightening device in which a first helical gear 23 and a second helical gear 31 are designed and the second helical gear 31 is designed in order to improve the problem that the turbine scroll cannot be wound quickly or reversed. 20 teeth and the first helical gear 23 is set to 40 teeth, so that the gear ratio of the second and a helical gears 31, 23 is 1:2, which is 8 times faster than the rotational speed of the turbine vortex 1:16. Significantly improve work rate efficiency quickly.

Referring to Figures 1 to 4, the strap tightening device, the strap tightening device, wherein the ratchet 22 includes a plurality of ratchet teeth 222, and each of the two ratchet teeth 222 is a ratchet slot 221 The aforementioned pawl set 50 The pawl 51 is disposed on the V-shaped side and is provided with a pawl tip 511 and is pressed by a torsion spring 52, so that the pawl tip 511 is normally caught in the ratchet tooth groove 221 of the ratchet wheel 22, and the body 10 on the side of the pawl 51 is disposed. An eccentric cam 53 is fixedly disposed on the upper arm, and a limit forming block 54 is fixed. The eccentric cam 53 cooperates with the limit forming block 54 to prevent the eccentric cam 53 from being overturned. The eccentric cam 53 does not rotate beyond the dead point. Due to the pressure of the torsion spring 52, the aforementioned self-locking function of the pawl set 50 is achieved, so that the aforementioned spindle set 20 can be easily rotated without being restrained. The ratchet 22 and the pawl set 50 can prevent the band 70 from automatically releasing the band.

Referring to the second and fourth figures, the strap tightening device, wherein the upper body 10 is parallel to the spindle group 20, and a hollow rivet pin 16 having a class end is fixed. The hollow rivet pin 16 has the foregoing The function of the width of the body 10 is that the hollow rivet pin 16 is used as a hook point of the torsion spring 52.

Referring to the fourth figure, the strap tightening device, wherein the body 10 pivotally connects the pawl 51 and the torsion spring 52 with a shaft 55 and two washers 56, the shaft 55 and the two washers 56. The stainless steel is used to block the heat conduction during the welding to avoid the heat causing the zinc body to be dezinced after the plating.

Referring to the seventh, eighth and ninth drawings, the strap tightening device, wherein the handle set 40 is provided with a ratchet sleeve 41, the ratchet sleeve 41 is sleeved to the transmission shaft 30, and the foregoing is pivoted to One of the handle sets 40 The block 42 is abutted by a ball spring 43 and is controlled to resist the three-stage function of the ratchet sleeve 41 in forward rotation, reverse rotation or idling. The foregoing handle set 40 can be configured to allow the handle set 40 to be rotated back to a specific designated position after the strap 70 is wound, without being limited by the number of winding turns of the drive shaft 30. The resulting problem that the handle set 40 cannot be fixed at a particular location. And the ratchet block 42 has three functions of forward rotation, reverse rotation or idle rotation to meet different usage requirements.

Referring to the fifth and sixth figures, the strap tightening device, wherein the handle set 40 includes a handle portion 44 and an extended handle portion 45, and the end of the extending handle portion 45 is pivotally connected to a grip portion 46, and The handle portion 44 is swingably turned up or down, and the handle portion 44 is provided with first and second guide rods 441 and 442. The extension handle portion 45 is provided with a high-low limit stop groove 451, and the limit slide is performed. The slot 451 is sleeved to the first and second guiding rods 441 and 442, so that the extending handle portion 45 is extended or shortened. The two ends of the limiting sliding groove 451 are provided with a large notch 4511, and the first guiding rod 441 is provided. A small spring 443 presses the aforementioned extended shank portion 45 so that the aforementioned extended shank portion 45 is securely fixed and does not slip. The design of the handle set 40 with telescopic function can reduce waste or interference of space when the storage is fixed. Moreover, the extended handle set 40 achieves a labor-saving effect when operated.

Referring to the first and second figures, the strap tightening device, wherein the body 10 is provided with a fixed limiting slot 15 on the other side, the handle set 40 is gathered and the grip portion 45 is turned downward, and the grip portion is 45 has to match the aforementioned handle set 40, the aforementioned grip portion 45 is placed in the fixed fixing slot 15 of the body 10 to prevent the handle set 40 from swinging freely.

Referring to Figures 3 and 4, the strap tightening device, wherein the periphery of the first and second helical gears 23, 31 on the side of the body 10 is protected by a protective cover 60.

It can be seen from the above that the bundle tightening device of the present invention is indeed the first in the industry and meets the novel requirements of the new patent, and its comprehensive and innovative design conforms to the progressive requirements of the new patent, and its utilization ratio is The 1:2 helical gear can achieve the function of fast reeling or rewinding, and the ratchet pawl group can prevent the automatic retraction from loosening. The handle group has three functions of positive, reverse and idling, which can return the handle set. Rotate to a specific designated position; the retractable handle set has the function of saving labor and saving storage space, and is in line with better industrial utilization.

The foregoing description of the preferred embodiments of the present invention is specifically described as a technical feature of the present invention; however, those skilled in the art can make changes and modifications to the present invention without departing from the spirit and principles of the present invention. Such changes and modifications shall be covered in the scope defined by the following patent application.

In summary, the present invention provides a strap tightening device, which has indeed achieved all the purposes of this creation, and the spatial pattern of the combined structure is not found in the same type of products, nor has it been disclosed before the application, and has met the patent law. The provisions of the law, 提出 apply in accordance with the law.

10‧‧‧ Ontology

13‧‧‧ rod body

16‧‧‧ Hollow riveting pin

20‧‧‧ Spindle set

21‧‧‧ Spindle

211‧‧‧Belt slot

22‧‧‧ ratchet

23‧‧‧First helical gear

30‧‧‧Drive shaft

31‧‧‧Second helical gear

40‧‧‧Handle set

46‧‧‧ Grip

50‧‧‧Pawl group

Claims (8)

A belt tightening device comprises: a body, the body comprises first and second side walls, a front side of the body is provided with a rod for fixing one end of the belt; and a main shaft group, the main shaft group passes through the first and second side walls The spindle group includes a spindle, one end of the spindle is provided with a ratchet wheel and a first helical gear, and the spindle, the ratchet wheel and the first helical gear are integrally formed, and the sleeve is provided with a strap slot; a transmission shaft, the transmission shaft is pivoted to the side of the body, a second helical gear is fixed on the transmission shaft, and the second helical gear meshes with the first helical gear, and the gear ratio is 1:2; a set, the handle set is connected to the transmission shaft, the handle set rotates to drive the transmission shaft to rotate; and a pawl set, the pawl set is pivoted to the side of the body, and the pawl of the pawl set is stuck The ratchet tooth groove of the aforementioned ratchet is inserted to prevent the aforementioned spindle group from being reversed. The strap tightening device according to claim 1, wherein the ratchet includes a plurality of ratchet teeth, and each of the ratchet teeth is a ratchet tooth groove, and the pawl group is provided with a V-shaped side. The pawl tip is pressed by a torsion spring, so that the aforementioned pawl tip is normally caught in the ratchet tooth groove of the ratchet wheel, and an eccentric cam and a fixed one are pivoted on the body of the side of the pawl The limit styling block, the eccentric cam cooperates with the limit shape block to prevent the eccentric cam from overturning, and the eccentric cam rotates beyond the dead point and is not subjected to the pressure of the torsion spring to achieve the effective self-locking function of the pawl group. Therefore, the aforementioned spindle set can be easily rotated without being restrained. The bundle tightening device according to claim 2, wherein the upper main body is parallel to the spindle group to fix a hollow rivet pin having a class end, and the hollow rivet pin has a function of maintaining the width of the body, The hollow riveting pin is used as a hook point of the aforementioned torsion spring. The bundle tightening device according to claim 2, wherein the body is pivotally connected to the pawl and the torsion spring by a shaft, the shaft and the two washers are used for blocking welding. At the time of heat conduction, to avoid heat, the above-mentioned body after plating is dezinced. The strap tightening device according to claim 1, wherein the handle set is provided with a ratchet sleeve, and the ratchet sleeve is sleeved to the transmission shaft, and the ratchet block of the handle group is pivotally connected The abutment of a steel ball spring can be controlled to resist the three-stage function of the above-mentioned ratchet sleeve which exhibits forward rotation, reverse transmission or idling. The strap tightening device according to claim 1, wherein the handle set includes a handle portion and an extended handle portion, and the end of the extended handle portion is pivotally connected to a grip portion, and the grip portion is swingable Turning up or down, the handle portion is provided with first and second guide rods, and the extension handle is provided with high and low limits. a sliding groove, the limiting sliding groove is sleeved to the first and second guiding rods, so that the extending handle portion is extended or shortened, and the two ends of the limiting sliding groove are provided with a large gap, and the first guiding rod is provided A small spring abuts against the extending handle portion, so that the extended handle portion is securely fixed and does not slip. The strap tightening device according to claim 6, wherein the other side of the main body is provided with a fixed limiting slot, and the grip portion is turned downward, and the grip portion is inserted into the body with the handle group. The fixed limit slot is fixed to prevent the aforementioned handle set from swinging at will. The strap tightening device according to claim 1, wherein a periphery of the first and second helical gears on the side of the body is protected by a protective cover.