CN210161039U - Torsion sleeve - Google Patents

Abstract

The utility model discloses a torsion sleeve, including the sleeve, the connecting screw, elastic component and turn round tight head, telescopic first end offer be used for with need screw up the nut complex first connecting hole of nut or bolt, telescopic second end offer with the screw rod clearance fit's of connecting screw second connecting hole, the second connecting hole communicates with first connecting hole, form the step terminal surface between first connecting hole and the second connecting hole, the step terminal surface is the first flank of tooth that is equipped with the tooth, the terminal surface that the nut is close to the screw rod is the second flank of tooth that is equipped with the tooth, first flank of tooth and second flank of tooth meshing are connected; turn round tight head and seted up threaded hole, threaded hole and screw rod threaded connection, the one end and the telescopic second end butt of elastic component, the other end with turn round tight first butt, the elastic component is used for providing the elastic force of moving along keeping away from telescopic direction for turning round tight head. The torsion sleeve can ensure reliable locking of the screw or the bolt and cannot damage the screw or the bolt.

Description

Torsion sleeve

Technical Field

The utility model relates to an appurtenance technical field especially relates to a torsion sleeve.

Background

At present, screw or bolt connection is mostly used in life or industry, and it is known that all connections have a locked torque value to determine whether the connection is installed well and reliable, and a torque wrench (wrench with torque value) is used, but such a specialized tool is not equipped in a construction site or a home, but a common wrench is used for locking and fixing, so that whether the screw or the bolt is locked or not is judged completely by personal feeling during the locking process, and the locking degree is possibly different due to personal feeling difference: 1. the bolt or the bolt is easy to fall off in the use or working process because the bolt or the bolt is not locked; 2. the torque is too large, and the screw or bolt is easy to lose efficacy.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a torque sleeve which can ensure the reliable locking of a screw or a bolt and can not damage the screw or the bolt.

The purpose of the utility model is realized by adopting the following technical scheme:

the torsion sleeve comprises a sleeve, a connecting screw, an elastic part and a tightening head, wherein a first end of the sleeve is provided with a first connecting hole which is used for being matched with a nut of a screw cap or a nut of a bolt to be tightened, the aperture of the first connecting hole is larger than the outer diameter of the nut of the connecting screw, a second end of the sleeve is provided with a second connecting hole which is in clearance fit with a screw rod of the connecting screw, the second connecting hole is communicated with the first connecting hole, a step end face is formed between the first connecting hole and the second connecting hole, the step end face is a first tooth face provided with teeth, the end face of the nut, which is close to the screw rod, is a second tooth face provided with teeth, and the first tooth face is meshed with the second tooth face; turn round tight head and offer screw hole, the screw hole with screw rod threaded connection, the one end of elastic component with telescopic second end butt, the other end with turn round tight first butt, the elastic component is used for turn round tight head and provide the elastic force of keeping away from along telescopic direction removal.

Furthermore, the teeth on the first tooth surface and the second tooth surface are oblique teeth, the oblique teeth are multiple, the oblique teeth on the first tooth surface are uniformly distributed around the central axis of the sleeve, and the arrangement mode of the oblique teeth on the second tooth surface corresponds to that of the oblique teeth on the first tooth surface.

Furthermore, the tightening head is provided with a guide post, the threaded hole is formed in the guide post, and the elastic piece is sleeved on the outer wall surface of the guide post.

Further, telescopic second end is equipped with the edge telescopic axial extension's spacing section of thick bamboo, turn round tight head and set up around the annular spacing groove that the circumference of guide post was arranged, the axial depth degree of annular spacing groove is greater than the axial length of spacing section of thick bamboo, spacing section of thick bamboo is inserted and is located in the annular spacing groove, just the outer wall of spacing section of thick bamboo with clearance fit between the wall of annular spacing groove, work as spacing section of thick bamboo is inserted and is located when the annular spacing groove, the elastic component is located the internal face of spacing section of thick bamboo with between the outer wall of guide post.

Further, the elastic part is a spring or a rubber elastic sleeve.

Further, the first connecting hole is a stepped hole, and a large-diameter hole of the stepped hole is a hexagon socket hole used for being matched with a nut of a screw or a nut of a bolt to be screwed.

Further, the end part of the tightening head is provided with a hexagonal column body used for being matched with a wrench.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the connecting screw and the sleeve are meshed and connected through the first tooth surface and the second tooth surface, the screw rod of the connecting screw is in clearance fit with the second connecting hole, the screw rod of the connecting screw is in threaded connection with the screwing head, an elastic piece for providing elastic force for the screwing head to move in the direction away from the sleeve is arranged between the sleeve and the screwing head, when the connecting screw is used, the first connecting hole of the sleeve is sleeved on a nut of the screw to be screwed or a nut of the bolt, a spanner is clamped on the screwing head, the screwing head is screwed through the spanner, so that the connecting screw is driven to rotate, the sleeve rotates along with the connecting screw due to the fact that the connecting screw is meshed and connected with the sleeve through the first tooth surface and the second tooth surface, the screw or the nut to be screwed is driven to rotate, when the screw or the nut to be screwed is reliably and stops rotating, the sleeve stops rotating, the screwing head continues to rotate and drives the connecting screw to move along the direction disengaged from the sleeve until the connecting screw is disengaged from the sleeve and connected with the sleeve, so that the connecting screw and the screwing head idle rotate, the screw or the nut needing to be screwed is guaranteed to be reliably screwed, meanwhile, the screw or the nut needing to be screwed is prevented from being excessively screwed and losing efficacy is avoided, after the screw is screwed, the sleeve is separated from the screw or the nut needing to be screwed, and the connecting screw is reset and meshed with the sleeve under the driving of the elastic force of the elastic piece.

Drawings

Fig. 1 is a schematic structural view of a torque sleeve according to the present invention;

FIG. 2 is an exploded view of the torsion sleeve shown in FIG. 1;

fig. 3 is a cross-sectional view of the torque sleeve shown in fig. 1;

FIG. 4 is a front view of a sleeve of the torsion sleeve of FIG. 1;

FIG. 5 is a cross-sectional view of the sleeve shown in FIG. 4;

fig. 6 is a schematic view of a connection screw in the torque sleeve shown in fig. 1.

In the figure: 1. a sleeve; 11. a first connection hole; 12. a second connection hole; 13. a limiting cylinder; 2. a connecting screw; 21. a nut; 22. a screw; 3. an elastic member; 4. tightening the head; 41. a guide post; 411. a threaded hole; 42. an annular limiting groove; 43. a hexagonal cylinder; 5. and (4) helical teeth.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 3, a torque sleeve according to a preferred embodiment of the present invention is shown, which comprises a sleeve 1, a connection screw 2, an elastic member 3 and a torque head 4, wherein a first end of the sleeve 1 is provided with a first connection hole 11 for engaging with a nut of a screw cap or a screw bolt to be tightened, a shape of the first connection hole 11 is adapted to a shape of the nut of the screw cap or the screw bolt to be tightened, a diameter of the first connection hole 11 is larger than an outer diameter of a nut 21 of the connection screw 2, a second end of the sleeve 1 is provided with a second connection hole 12 in clearance fit with a screw 22 of the connection screw 2, the second connection hole 12 is communicated with the first connection hole 11, a stepped end surface is formed between the first connection hole 11 and the second connection hole 12, the stepped end surface is a first toothed surface, a second toothed surface is formed on an end surface of the nut 21 close to the screw 22, the first tooth surface is meshed with the second tooth surface; turn round tight head 4 and offer screw hole 411, screw hole 411 and screw rod 22 threaded connection, the one end of elastic component 3 and the second end butt of sleeve 1, the other end of elastic component 3 with turn round tight head 4 butt, elastic component 3 is used for providing the elastic force of moving along the direction of keeping away from sleeve 1 for turning round tight head 4.

The utility model discloses a torque sleeve, through making between connecting screw 2 and the sleeve 1 through first flank of tooth and second flank of tooth meshing connection, and connecting screw 2's screw rod 22 and second connecting hole 12 clearance fit, connecting screw 2's screw rod 22 and the head 4 threaded connection of screwing together turn round, and be equipped with between sleeve 1 and the head 4 of screwing round and be used for providing the head 4 of screwing round with the elastic component 3 of the elastic force of moving along the direction of keeping away from sleeve 1, when using, the first connecting hole 11 cover of sleeve 1 is located on the nut of the screw that needs to be screwed up or on the nut of bolt, reuse spanner card on the head 4 of screwing round, turn round the head 4 through the spanner, thereby drive connecting screw 2 and rotate, because connecting screw 2 and sleeve 1 are connected through first flank of tooth and second flank of tooth meshing, then sleeve 1 also follows connecting screw 2 and rotates, thereby drive the screw that needs to be screwed up or nut rotates, when a screw or a nut needing to be screwed is reliably screwed and stops rotating, the sleeve 1 stops rotating, the screwing head 4 continues to rotate to drive the connecting screw 2 to move along the direction disengaged from the sleeve 1 until the connecting screw 2 is disengaged from the sleeve 1, so that the connecting screw 2 and the screwing head 4 idle, the screw or the nut needing to be screwed is ensured to be reliably screwed, meanwhile, failure caused by the fact that the screw or the nut needing to be screwed is excessively screwed is avoided, after the screw or the nut needing to be screwed is screwed, the sleeve 1 is disengaged from the screw or the nut needing to be screwed, and the connecting screw 2 is in reset engagement with the sleeve 1 under the driving of the elastic force of the elastic piece 3.

Preferably, referring to fig. 4-6, the teeth on the first tooth surface and the second tooth surface are helical teeth 5, the helical teeth 5 are provided in plurality, the plurality of helical teeth 5 on the first tooth surface are evenly distributed around the central axis of the sleeve 1, and the plurality of helical teeth 5 on the second tooth surface correspond to the arrangement of the helical teeth 5 on the first tooth surface. By setting the teeth on both the first tooth surface and the second tooth surface as the helical teeth 5, smooth disengagement and engagement of the coupling screw 2 and the sleeve 1 can be facilitated.

As shown in fig. 2, the tightening head 4 is provided with a guide post 41, the threaded hole 411 is opened on the guide post 41, the elastic member 3 is sleeved on the outer wall surface of the guide post 41, and the guide post 41 plays a guiding role for the elastic member 3, so as to facilitate the directional compression and extension of the elastic member 3.

More specifically, the second end of the sleeve 1 is provided with a limiting cylinder 13 extending along the axial direction of the sleeve 1, the tightening head 4 is provided with an annular limiting groove 42 arranged around the circumferential direction of the guide post 41, the axial depth of the annular limiting groove 42 is greater than the axial length of the limiting cylinder 13, the limiting cylinder 13 is inserted into the annular limiting groove 42, the outer wall surface of the limiting cylinder 13 is in clearance fit with the wall surface of the annular limiting groove 42, and when the limiting cylinder 13 is inserted into the annular limiting groove 42, the elastic part 3 is located between the inner wall surface of the limiting cylinder 13 and the outer wall surface of the guide post 41. Through set up spacing section of thick bamboo 13 on sleeve 1 and set up annular spacing groove 42 on turning round tight head 4, and spacing section of thick bamboo 13 inserts and locates in annular spacing groove 42, has the guide effect to sleeve 1 to be convenient for the reliable meshing between connecting screw 2 and the sleeve 1.

In particular, the elastic member 3 may be a spring or a rubber elastic sleeve 1, and in the present embodiment, the elastic member 3 is preferably a spring in order to ensure a reliable engagement between the connection screw 2 and the sleeve 1.

First connecting hole 11 is the shoulder hole, the major diameter hole of shoulder hole is for being used for with the nut of the screw that needs to tighten or the interior hexagonal hole of nut complex of bolt, the aperture ratio of the minor diameter hole of shoulder hole is big than the external diameter of connecting screw 2's nut 21, when connecting screw 2 and sleeve 1 break away from the meshing, do not have the contact between connecting screw 2 and the sleeve 1, guarantee connecting screw 2's smooth and easy removal, guarantee then when reliably screwing up screw or the bolt that needs to tighten, this torsion telescopic connecting screw 2 and twist tight head 4 idle running.

The end of the tightening head 4 is provided with a hexagonal cylinder 43 for matching with a wrench, so as to prevent slipping when the torque sleeve is twisted by using the wrench.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (7)

1. The torsion sleeve is characterized by comprising a sleeve, a connecting screw, an elastic part and a tightening head, wherein a first connecting hole matched with a nut of a screw cap or a screw bolt to be tightened is formed in a first end of the sleeve, the aperture of the first connecting hole is larger than the outer diameter of the nut of the connecting screw, a second connecting hole in clearance fit with a screw rod of the connecting screw is formed in a second end of the sleeve, the second connecting hole is communicated with the first connecting hole, a step end face is formed between the first connecting hole and the second connecting hole, the step end face is a first tooth face with teeth, the end face, close to the screw rod, of the nut is a second tooth face with teeth, and the first tooth face is meshed with the second tooth face; turn round tight head and offer screw hole, the screw hole with screw rod threaded connection, the one end of elastic component with telescopic second end butt, the other end with turn round tight first butt, the elastic component is used for turn round tight head and provide the elastic force of keeping away from along telescopic direction removal.

2. The torsion sleeve of claim 1, wherein the teeth on the first tooth flank and the second tooth flank are each helical teeth, the helical teeth are provided in plurality, the plurality of helical teeth on the first tooth flank are evenly distributed around the central axis of the sleeve, and the plurality of helical teeth on the second tooth flank correspond to the arrangement of the helical teeth on the first tooth flank.

3. The torsion sleeve according to claim 1, wherein the tightening head is provided with a guide post, the threaded hole is opened in the guide post, and the elastic member is sleeved on an outer wall surface of the guide post.

4. The torque sleeve according to claim 3, wherein the second end of the sleeve is provided with a limiting barrel extending in the axial direction of the sleeve, the tightening head is provided with an annular limiting groove arranged around the circumferential direction of the guide post, the axial depth of the annular limiting groove is greater than the axial length of the limiting barrel, the limiting barrel is inserted into the annular limiting groove, the outer wall surface of the limiting barrel is in clearance fit with the wall surface of the annular limiting groove, and when the limiting barrel is inserted into the annular limiting groove, the elastic member is located between the inner wall surface of the limiting barrel and the outer wall surface of the guide post.

5. The torsion sleeve of claim 1, wherein the elastic member is a spring or a rubber elastic sleeve.

6. The torque sleeve of claim 1, wherein the first connection hole is a stepped hole, and the large diameter hole of the stepped hole is a hexagon socket for engaging with a nut of a screw or a nut of a bolt to be tightened.

7. The torque sleeve of claim 1, wherein the end of the torque head is provided with a hexagonal post for engagement with a wrench.

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