CN210265685U - Ratchet wheel type tensioning mechanism - Google Patents

Abstract

The utility model discloses a ratchet formula straining device, it utilizes the intermediate junction spare of a special construction, connects the connecting piece of two differences as an organic whole structure, is connected the back with two connecting pieces that are directly connected with the rope through intermediate junction spare, and the two can not take place relative rotation under the normal state to guaranteed the reliability of tensioning, and through simple operation, can let adjust very conveniently between two connecting pieces again. And the manufacturing process is simple, the manufacturing cost is low, so that the novel LED lamp has multiple advantages, is particularly suitable for popularization and application in the field, and has a very wide market prospect.

Description

Ratchet wheel type tensioning mechanism

Technical Field

The utility model relates to a connecting piece, especially a ratchet formula straining device.

Background

In skylight hemming injection molds, the perimeter design slides are left undercut over the perimeter. The opposite sliding blocks need to move synchronously, and if the opposite sliding blocks need to move synchronously, the product can be in serial position, and then the product is poor. In order to synchronize the slides, a mechanism must be used to force the cylinders that move the slides into synchronization. The forced synchronization mechanism uses transmission parts such as chains and the like, and the action is delayed due to the fact that the forced synchronization mechanism is soft and extends under the action of force, so that absolute synchronization cannot be achieved. When the tensioning measures are taken by using other conventional means such as elasticity, gravity and the like, the pretightening force is overcome and absolute synchronization cannot be achieved when the force reaches a certain value.

In order to facilitate adjustment of a traditional tensioning mechanism, two bolts are generally connected to a connecting frame in a threaded mode, lifting rings are arranged at the tail portions of the two bolts, and a rope is connected to the lifting rings. The tension between the two lengths of connecting rope is achieved by rotating the bolt, changing the relative position of the bolt in the connection plus the relative position. However, after the tensioning mechanism is used for a period of time, the bolt is loosened due to factors such as vibration and the like, and the tensioning effect is further influenced. There is therefore a need for a method or apparatus that addresses the above-mentioned problems.

Disclosure of Invention

The utility model relates to a solve the above-mentioned not enough that prior art exists, provide a simple structure, design benefit can still keep the ratchet formula straining device of tensile force under adverse circumstances.

The technical solution of the utility model is that: a ratchet formula straining device which characterized in that: the mechanism comprises a first connecting piece 1, one end of the first connecting piece 1 is provided with a cover body 2, the other end of the first connecting piece 1 is provided with a connecting part 3, a second connecting piece 4 is matched with the first connecting piece 1, one end of the second connecting piece 4 is provided with a first ratchet surface, a plurality of ratchets 5 are uniformly distributed on the circumference of the first ratchet surface, a second ratchet surface matched with the first ratchet surface is arranged inside the first connecting piece 1, a plurality of ratchets 5 are also uniformly distributed on the circumference of the second ratchet surface, a gland 6 is connected on the cover body 2 in a threaded manner, a through hole for the second connecting piece 4 to pass through is arranged at the center of the gland 6, a limit step 7 is arranged at the outer edge of the first ratchet surface, a spring 8 is sleeved outside the second connecting piece 4, two ends of the spring 8 are respectively contacted with the gland 6 and the limit step 7, and a first clutch plate 9 is also connected on the gland 6, the mechanism is characterized in that a second clutch plate 10 is matched with the first clutch plate 9, the first clutch plate 9 and the second clutch plate 10 are both sleeved on a second connecting piece 4, a snap ring 11 is fixedly arranged on the second connecting piece 4, the first clutch plate 9 and the second clutch plate 10 are positioned between the snap ring 11 and a gland 6, a plurality of operation holes 12 are respectively arranged on the outer circumferences of the first clutch plate 9 and the second clutch plate 10, a plurality of grooves 13 which are uniformly distributed in the circumferential direction are arranged on the end surface of the first clutch plate 9 facing the second clutch plate 10, a plurality of bulges 14 matched with the grooves 13 are arranged on the second clutch plate 10, the outlines of the bulges 14 and the grooves 13 are smooth curved surfaces, the mechanism further comprises a third connecting piece 15, the third connecting piece 15 can penetrate through an inner hole of the second connecting piece 4 and is directly in threaded connection with an inner threaded hole 16 on the first connecting piece 1, at the same time, the third connecting piece 15 is provided with long grooves 17 distributed along the axial direction, the inner hole of the second connecting piece 4 is provided with a key 18 matched with the long grooves 17, and the end part of the third connecting piece 15 is also provided with a connecting part 3.

Compared with the prior art, the utility model, have following advantage:

the ratchet wheel type tensioning mechanism with the structure is simple in structure, ingenious in design and reasonable in layout. The tensioning mechanism is designed to solve the problem of the traditional tensioning mechanism in the using process, a special structure is designed, two different connecting pieces are connected into a whole by using an intermediate connecting piece of the special structure, and after the two connecting pieces which are directly connected with a rope are connected through the intermediate connecting piece, the two connecting pieces cannot rotate relative to each other under a normal state, so that the reliability of tensioning is ensured, and the two connecting pieces can be adjusted through simple operation, and the tensioning mechanism is very convenient. And the manufacturing process is simple, the manufacturing cost is low, so that the novel LED lamp has multiple advantages, is particularly suitable for popularization and application in the field, and has a very wide market prospect.

Drawings

Fig. 1 is a schematic structural diagram of a first working state of the present invention (in this case, the first connecting member and the third connecting member can only rotate in one direction).

Fig. 2 is a schematic structural diagram of a second working state of the present invention (at this time, the first connecting member and the third connecting member can rotate freely).

Fig. 3 is a cross-sectional view of an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a connection state of the second connecting member and the third connecting member in the embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the first connecting member according to the embodiment of the present invention.

Fig. 6 is a sectional view showing a connection state of the second connecting member and the third connecting member according to the embodiment of the present invention.

Detailed Description

The following description will explain embodiments of the present invention with reference to the drawings. As shown in fig. 1 to 6: a ratchet wheel type tensioning mechanism comprises a first connecting piece 1, wherein one end of the first connecting piece 1 is provided with a cover body 2, the other end of the first connecting piece 1 is provided with a connecting part 3, a second connecting piece 4 is matched with the first connecting piece 1, one end of the second connecting piece 4 is provided with a first ratchet surface, a plurality of ratchets 5 are uniformly distributed on the first ratchet surface in a circumferential manner, a second ratchet surface matched with the first ratchet surface is arranged inside the first connecting piece 1, a plurality of ratchets 5 are also uniformly distributed on the second ratchet surface in a circumferential manner, a gland 6 is in threaded connection with the cover body 2, a through hole for the second connecting piece 4 to pass through is formed in the center of the gland 6, a limiting step 7 is arranged on the outer edge of the first ratchet surface, a spring 8 is sleeved outside the second connecting piece 4, and two ends of the spring 8 are respectively in contact with the gland 6 and the limiting step 7, the pressing cover 6 is further connected with a first clutch plate 9, a second clutch plate 10 is matched with the first clutch plate 9, the first clutch plate 9 and the second clutch plate 10 are both sleeved on the second connecting piece 4, a snap ring 11 is fixedly arranged on the second connecting piece 4, the first clutch plate 9 and the second clutch plate 10 are positioned between the snap ring 11 and the pressing cover 6, a plurality of operation holes 12 are respectively arranged on the outer circumferences of the first clutch plate 9 and the second clutch plate 10, a plurality of grooves 13 evenly distributed in the circumferential direction are arranged on the end surface of the first clutch plate 9 facing the second clutch plate 10, a plurality of bulges 14 matched with the grooves 13 are arranged on the second clutch plate 10, the outlines of the bulges 14 and the grooves 13 are smooth curved surfaces, the mechanism further comprises a third connecting piece 15, and the third connecting piece 15 can penetrate through an inner hole of the second connecting piece 4, and is directly connected with the thread of the internal thread hole 16 of the first connecting piece 1, at the same time, the third connecting piece 15 is provided with long grooves 17 distributed along the axial direction, the inner hole of the second connecting piece 4 is provided with a key 18 matched with the long grooves 17, and the end part of the third connecting piece 15 is also provided with a connecting part 3.

The utility model discloses ratchet formula straining device's working process as follows: firstly, the second connecting piece 4 is inserted into the first connecting piece 1, then the third connecting piece 15 is inserted into the inner hole of the second connecting piece 4, because the key 18 on the second connecting piece 4 enters the long groove 17 on the third connecting piece 15 at the moment, the second connecting piece 4 and the third connecting piece 15 can rotate together, the third connecting piece 15 is rotated to realize threaded connection between the end part of the third connecting piece and the internal threaded hole 16 of the first connecting piece 1, then the gland 6 is screwed on the first connecting piece 1, after the gland 6 is fastened, under the action of the spring 8, the first ratchet surface on the second connecting piece 4 and the second ratchet surface on the first connecting piece 1 are contacted with each other and certain positive pressure is kept, after the two ratchet surfaces are meshed, the second connecting piece 4 and the first connecting piece 1 can only rotate towards one direction, and the freedom degree of rotation in the other direction is limited, namely, the rotation can be only carried out in one direction,

in this state, the first connecting piece 1 and the second connecting piece 4 can only rotate in the screwing direction and can not rotate in the unscrewing direction due to the action of the ratchet surface; the third connecting piece 15 and the second connecting piece 4 can not rotate relatively under the action of the key 18 and the long groove 17, so that the third connecting piece 15 and the first connecting piece 1 can only rotate in one direction; therefore, the distance between the connecting part 3 at the tail end of the first connecting piece 1 and the connecting part 3 at the tail end of the third connecting piece 15 cannot be changed, and the tensioning effect is ensured;

when the first connecting piece 1 and the third connecting piece 15 need to be adjusted, two iron rods are taken and respectively inserted into the operation holes 12 on the first clutch plate 9 and the second clutch plate 10, the iron rods are pulled to enable the first clutch plate 9 to rotate relative to the second clutch plate 10, after the two clutch plates rotate relatively, the bulge 14 originally positioned in the groove 13 can slide out of the groove 13, so that the distance between the first clutch plate 9 and the second clutch plate 10 is increased, the snap ring 11 and the second connecting piece 4 fixedly connected with the snap ring 11 are pushed to move towards the direction far away from the first connecting piece 1, at the moment, two ratchet surfaces on the first connecting piece 1 and the second connecting piece 4 are separated from each other, the first connecting piece 1 and the second connecting piece 4 (and the third connecting piece 15 connected with the second connecting piece 4) can rotate relatively, an operator can rotate the third connecting piece 15, and the overall length of the first connecting piece 1 and the third connecting piece 15 is changed, or separating the two;

after the adjustment is finished, the first clutch plate 9 and the second clutch plate 10 are rotated again, the bulge 14 falls back into the groove 13 again, the two ratchet surfaces are attached again under the action of the spring 8, and the mechanism is restored to the connection and tensioning state again.

Claims (1)

1. A ratchet formula straining device which characterized in that: the mechanism comprises a first connecting piece (1), one end of the first connecting piece (1) is provided with a cover body (2), the other end of the first connecting piece is provided with a connecting part (3), a second connecting piece (4) is matched with the first connecting piece (1), one end of the second connecting piece (4) is provided with a first ratchet surface, a plurality of ratchets (5) are uniformly distributed on the first ratchet surface at the circumference, a second ratchet surface matched with the first ratchet surface is arranged inside the first connecting piece (1), a plurality of ratchets (5) are also uniformly distributed on the second ratchet surface at the circumference, a gland (6) is in threaded connection with the cover body (2), a through hole for the second connecting piece (4) to pass through is formed in the center of the gland (6), a limiting step (7) is arranged on the outer edge of the first ratchet surface, and a spring (8) is sleeved outside the second connecting piece (4), the two ends of the spring (8) are respectively contacted with the gland (6) and the limit step (7), the gland (6) is further connected with a first clutch plate (9) which is matched with a second clutch plate (10) with the first clutch plate (9), the first clutch plate (9) and the second clutch plate (10) are both sleeved on the second connecting piece (4), the second connecting piece (4) is fixedly provided with a snap ring (11), the first clutch plate (9) and the second clutch plate (10) are positioned between the snap ring (11) and the gland (6), the outer circumferences of the first clutch plate (9) and the second clutch plate (10) are both provided with a plurality of operating holes (12), the end surface of the first clutch plate (9) facing the second clutch plate (10) is provided with a plurality of grooves (13) which are uniformly distributed in the circumferential direction, and the second clutch plate (10) is provided with a plurality of bulges (14) matched with the grooves (13), the profiles of the protrusion (14) and the groove (13) are smooth curved surfaces, the mechanism further comprises a third connecting piece (15), the third connecting piece (15) can penetrate through an inner hole of the second connecting piece (4) and is directly in threaded connection with an internal threaded hole (16) in the first connecting piece (1), meanwhile, long grooves (17) distributed along the axial direction of the third connecting piece are formed in the third connecting piece (15), keys (18) matched with the long grooves (17) are arranged in the inner hole of the second connecting piece (4), and a connecting part (3) is also arranged at the end part of the third connecting piece (15).

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