CN211573972U

CN211573972U - Bolt of convenient screw-up formula

Info

Publication number: CN211573972U
Application number: CN202020127703.1U
Authority: CN
Inventors: 周建林
Original assignee: Shanghai Zhongxin Hardware Manufacture Co ltd
Current assignee: Shanghai Zhongxin Hardware Manufacture Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-09-25
Anticipated expiration: 2030-01-19

Abstract

The utility model relates to a bolt of convenient tightening formula, it includes the bolt head and the screw rod of being connected with the bolt head, the screw rod is established to the smooth surface at its end that is close with both junctions of bolt head, the screw rod is established to the screw thread section at its end back of the body mutually with both junctions of bolt head, the cover is equipped with the gasket on the smooth surface, the overhead cover of bolt is equipped with the internal tooth ratchet, overhead articulated have can with the internal tooth ratchet meshing tighten the pawl, overhead seting up of bolt and the pawl groove I of tightening pawl adaptation, it is equipped with the leaf spring that resets between the two to tighten pawl and pawl groove I. The utility model discloses have the effect of simplifying the process of screwing up, improving the efficiency of screwing up.

Description

Bolt of convenient screw-up formula

Technical Field

The utility model belongs to the technical field of the fastener and specifically relates to a bolt of convenient tightening formula is related to.

Background

A cylindrical threaded fastener matched with a nut is a fastener consisting of a head part and a screw (a cylinder with external threads), and needs to be matched with the nut for fastening and connecting two parts with through holes.

The prior art can refer to the utility model patent of grant publication No. CN202220784U, and this utility model relates to a bolt, including the body, the body includes bolt head and screw rod, is equipped with the gasket between bolt head and screw rod, and the screw rod includes polished rod section and screw thread section.

Referring to fig. 1, the wrench comprises a wrench body 1, wherein the wrench body 1 comprises a handle 11 and an opening 12 opened at an end of the handle 11; when the handle is used, after the opening is aligned with the bolt head, the bolt can be rotated by applying external force to the handle; however, when the bolt is turned by a wrench, the handle is rotated after the opening is aligned with the bolt head, and the handle is reset after the opening is separated from the bolt head, and then the above operation is repeated, which causes the tightening process to be complicated, and reduces the tightening efficiency.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a bolt of convenient tightening formula, it has the effect of simplifying the process of screwing up, improving the efficiency of screwing up.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a bolt of convenient tightening formula, includes the bolt head and the screw rod of being connected with the bolt head, the screw rod is established to the smooth surface at its end that is close with both junctions of bolt head, the screw rod is established to the screw thread section at its end back of the body mutually with both junctions of bolt head, the cover is equipped with the gasket on the smooth surface, the overhead cover of bolt is equipped with the internal tooth ratchet, overhead articulated have can with the tightening pawl of internal tooth ratchet meshing of bolt, overhead ratchet groove I of seting up and tightening pawl adaptation of bolt, it is equipped with the leaf spring that resets to tighten pawl and ratchet groove I between the two.

Through adopting above-mentioned technical scheme, the overhead cover of bolt has can with screw up the internal tooth ratchet of pawl meshing, and then rotate internal tooth ratchet with the spanner alright screw up the bolt under the cooperation of screwing up the pawl to just can the antiport reset the spanner under the condition of need not taking off the spanner, so that continuously screw up the bolt, thereby reach the effect of the tightening process of simplifying the bolt, the efficiency of screwing up of improvement bolt.

The present invention may be further configured in a preferred embodiment as: the bolt head is hinged with a loosening pawl opposite to the direction of the tightening pawl, the internal tooth ratchet wheel can be meshed with the loosening pawl after being overturned and sleeved on the bolt head, a pawl groove II matched with the loosening pawl is formed in the bolt head, and a reset leaf spring is arranged between the loosening pawl and the pawl groove II.

Through adopting above-mentioned technical scheme, when needs unscrew the bolt, take off the internal tooth ratchet from the bolt head and overlap on the bolt head again after overturning, and then mesh internal tooth ratchet and unscrewing pawl, alright realize the effect of unscrewing the bolt.

The present invention may be further configured in a preferred embodiment as: a slot II is formed in the slot wall of the pawl slot II, and an inserting piece II capable of being inserted into the slot II is connected in the unscrewing pawl in a sliding mode.

Through adopting above-mentioned technical scheme, when screwing up the bolt under the cooperation of internal tooth ratchet and the cooperation of screwing up the pawl, unscrew the pawl and can fix in pawl groove II under the cooperation of inserted sheet II and slot II, and then avoid unscrewing the pawl and touching with pivoted internal tooth ratchet to promote internal tooth ratchet pivoted smoothness degree.

The present invention may be further configured in a preferred embodiment as: and a sliding chute II matched with the sliding track of the inserting piece II is formed in the unscrewing pawl, and a driving lever II capable of penetrating through the sliding chute II is fixedly arranged on the inserting piece II.

Through adopting above-mentioned technical scheme, when slip inserted sheet II fixes the pawl of unscrewing, spout II can play the balanced action to the removal of inserted sheet II to driving lever II enables the more convenient inserted sheet II of stirring of user of using, thereby improves the fixed efficiency of pawl of unscrewing.

The present invention may be further configured in a preferred embodiment as: a slot I is formed in the slot wall of the pawl slot I, and an inserting piece I which can be inserted into the slot I is connected in the tightening pawl in a sliding mode.

Through adopting above-mentioned technical scheme, when carrying out the unscrewing bolt under internal tooth ratchet and the cooperation of unscrewing the pawl, screw up the pawl and can fix in pawl groove I under the cooperation of inserted sheet I and slot I, and then avoid screwing up the pawl and touch with pivoted internal tooth ratchet to promote internal tooth ratchet pivoted smoothness degree.

The present invention may be further configured in a preferred embodiment as: screw up and set up spout I with I slip orbit adaptation of inserted sheet on the pawl, set firmly driving lever I that can wear to penetrate spout I on the inserted sheet I.

Through adopting above-mentioned technical scheme, when slip inserted sheet I fixes screwing up the pawl, spout I can play the balanced action to the removal of inserted sheet I to driving lever I enables the more convenient inserted sheet I of stirring of user of using, thereby improves and screws up the fixed efficiency of pawl.

The present invention may be further configured in a preferred embodiment as: the internal tooth ratchet is hexagonal prism-shaped.

Through adopting above-mentioned technical scheme, the internal tooth ratchet is established to hexagonal prism form to the internal tooth ratchet can match with the opening of spanner, thereby more efficient rotation internal tooth ratchet.

The present invention may be further configured in a preferred embodiment as: and the smooth surface is sleeved with a bearing sheet which is fixedly attached to the lower end surface of the bolt head.

Through adopting above-mentioned technical scheme, set up on the smooth surface and hold the piece, accept the piece and can not only hold internal tooth ratchet, and accept the piece and can mutually support with the gasket, make the bolt tighten the back more firm.

The present invention may be further configured in a preferred embodiment as: and a chamfer is formed at one end of the screw rod, which is far away from the connecting end of the bolt head.

Through adopting above-mentioned technical scheme, set up the chamfer at the end of screw rod to in the terminal bolt pilot hole that gets into more accurately of screw rod, promote the efficiency of screwing up the bolt.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the bolt head is sleeved with the internal tooth ratchet wheel which can be meshed with the tightening pawl, so that the bolt can be tightened under the matching of the tightening pawl by rotating the internal tooth ratchet wheel by using a wrench, and the wrench can be reversely rotated to reset the wrench under the condition of not taking down the wrench, so that the bolt can be continuously tightened, and the effects of simplifying the tightening process of the bolt and improving the tightening efficiency of the bolt are achieved;

2. when the bolt needs to be unscrewed, the internal tooth ratchet wheel is taken off from the bolt head, turned over and sleeved on the bolt head again, and then the internal tooth ratchet wheel is meshed with the unscrewing pawl, so that the bolt can be unscrewed;

3. when screwing up the bolt under the internal tooth ratchet with screw up the pawl cooperation, unscrew the pawl and can fix in pawl groove II under the cooperation of inserted sheet II and slot II, and then avoid unscrewing the pawl and touch with pivoted internal tooth ratchet to promote internal tooth ratchet pivoted smoothness degree.

Drawings

Fig. 1 is a schematic structural diagram of a related art wrench.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a plan view of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a partially enlarged schematic view of a portion B in fig. 3.

In the figure, 1, a wrench body; 11. a handle; 12. an opening; 2. a bolt head; 21. a receiving sheet; 22. screwing down the pawl; 221. inserting a piece I; 222. a deflector rod I; 223. a chute I; 23. unscrewing the pawl; 231. inserting a piece II; 232. a deflector rod II; 233. a chute II; 24. a pawl groove I; 241. a slot I; 25. a pawl groove II; 251. a slot II; 26. a reset leaf spring; 3. an internal tooth ratchet; 4. a screw; 41. a smooth surface; 411. a gasket; 42. a threaded segment; 43. and (6) chamfering.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2, for the utility model discloses a bolt of convenient screw-up formula, including bolt head 2 and screw rod 4, bolt head 2 is cylindricly, and screw rod 4's one end and bolt head 2's lower terminal surface fixed connection are provided with a slice at bolt head 2 and screw rod 4's junction and hold piece 21, and the radius of accepting piece 21 and bolt head 2 with the axle center and accepting piece 21 is greater than the radius of bolt head 2, and the lower terminal surface of accepting piece 21 and bolt head 2 is laminated fixedly.

The outer surface of the screw rod 4 is divided into a smooth surface 41 and a threaded section 42, the smooth surface 41 is arranged at one end part of the screw rod 4 connected with the bolt head 2, the threaded section 42 is arranged at one end part of the screw rod 4 connected with the bolt head 2, and the length of the threaded section 42 is larger than that of the smooth surface 41.

The smooth surface 41 is sleeved with a gasket 411, the gasket 411 and the screw rod 4 are coaxial, and when the bolt is screwed down, the lower end surface of the bearing sheet 21 can be abutted against the upper end surface of the gasket 411 so as to play a role in stabilizing the screwing down of the bolt.

The end of the threaded section 42 is provided with a chamfer 43, the chamfer 43 being placed on the end of the screw 4 facing away from the connection with the bolt head 2, so that the chamfer 43 enables a quick and accurate positioning of the threaded rod when assembling the bolt.

Referring to fig. 1 and 2, an internal tooth ratchet wheel 3 coaxial with a bolt head 2 is sleeved on the bolt head 2, the lower end face of the internal tooth ratchet wheel 3 can be attached to the upper end face of a bearing sheet 21, the internal tooth ratchet wheel 3 is in a hollow hexagonal prism shape, the outer ring of the internal tooth ratchet wheel 3 is engaged with an opening 12 of a wrench body 1, the inner ring of the internal tooth ratchet wheel 3 is attached to the outer ring of the bolt head 2, gear teeth which are uniformly arranged along the circumferential direction are arranged on the inner ring of the internal tooth ratchet wheel 3, the gear teeth are in an inclined shape, and the inclined direction of the gear teeth is opposite to the screwing direction of the bolt.

Referring to fig. 3 and 4, a tightening pawl 22 capable of being meshed with the internal tooth ratchet wheel 3 is hinged to the bolt head 2, a pawl groove i 24 matched with the tightening pawl 22 is formed in the outer ring of the bolt head 2, a reset leaf spring 26 is fixedly connected between the tightening pawl 22 and the pawl groove i 24, when the reset leaf spring 26 is in a natural state, the tightening pawl 22 is arranged outside the pawl groove i 24 and meshed with the internal tooth ratchet wheel 3, the internal tooth ratchet wheel 3 drives the bolt head 2 to rotate under the action of the wrench body 1 (see fig. 1), the tightening pawl 22 can be arranged in the pawl groove i 24, the internal tooth ratchet wheel 3 can be reset under the condition that the wrench body 1 is prevented from being taken down, and therefore the bolt is continuously tightened.

Referring to fig. 3 and 5, the bolt head 2 is hinged with a loosening pawl 23 opposite to the direction of the tightening pawl 22, when the internal-tooth ratchet 3 is turned over by 180 degrees and sleeved on the bolt head 2, the loosening pawl 23 can be meshed with the internal-tooth ratchet 3, a pawl groove ii 25 matched with the loosening pawl 23 is formed in the outer ring of the bolt head 2, a reset leaf spring 26 identical to that on the tightening pawl 22 is fixedly connected between the loosening pawl 23 and the pawl groove ii 25, and when the reset leaf spring 26 is in a natural state, the loosening pawl 23 is arranged outside the pawl groove ii 25 and meshed with the internal-tooth ratchet 3, so that the internal-tooth ratchet 3 can drive the bolt head 2 to rotate under the action of the wrench body 1 (refer to fig. 1), and the bolt loosening effect is achieved.

Referring to fig. 4, slot i 241 has been seted up on its one side cell wall that can laminate mutually with tightening pawl 22 in pawl groove i 24, it has inserted sheet i 221 that can insert in slot i 241 to tighten sliding connection in pawl 22, tighten pawl 22 and set up the spout i 223 with I221 sliding track adaptation of inserted sheet, inserted sheet i 221 sets firmly the driving lever i 222 that can penetrate spout i 223 on the inserted sheet i 221, when tightening pawl 22 arranges in pawl groove i 24, alright stir driving lever i 222 and make I221 of inserted sheet insert in slot i 241, thereby fix tightening pawl 22 in pawl groove i 24, with the guarantee internal tooth ratchet 3 pivoted smoothness nature when loosening the bolt.

Referring to fig. 5, a slot ii 251 is formed in one side slot wall of the pawl slot ii 25, which can be attached to the loosening pawl 23, an insertion piece ii 231, which can be inserted into the slot ii 251, is slidably connected to the loosening pawl 23, a sliding slot ii 233, which is adapted to a sliding track of the insertion piece ii 231, is formed in the loosening pawl 23, a shift lever ii 232, which can penetrate the sliding slot ii 233, is fixedly arranged on the insertion piece ii 231, when the loosening pawl 23 is arranged in the pawl slot ii 25, the shift lever ii 232 can be shifted to insert the insertion piece ii 231 into the slot ii 251, so that the loosening pawl 23 is fixed in the pawl slot ii 25, and the smoothness of rotation of the internal tooth ratchet wheel 3 when the bolt is tightened is ensured.

The implementation principle of the embodiment is as follows: when the bolt needs to be screwed down, the screw rod 4 is aligned to the assembly hole, the internal tooth ratchet wheel 3 is meshed with the screwing pawl 22, the unscrewing pawl 23 is fixed in the pawl groove II 25, the opening 12 of the wrench body 1 is sleeved on the outer side of the internal tooth ratchet wheel 3 and rotates for a half circle towards the direction of screwing the bolt, the bolt can be screwed for a half circle under the matching of the internal tooth ratchet wheel 3 and the screwing pawl 22, then the wrench body 1 is reset for a half circle, the internal tooth ratchet wheel 3 is driven to reset for a half circle, the screwing pawl 22 can be placed in the pawl groove I24 under the interference of the internal tooth ratchet wheel 3, the bolt is kept in an original state, and the next half circle can be screwed down; when the bolt needs to be unscrewed, the internal tooth ratchet wheel 3 only needs to be turned over by 180 degrees, the screwing pawl 22 is fixed in the pawl groove I24, and the unscrewing pawl 23 is meshed with the internal tooth ratchet wheel 3.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a bolt of convenient screw-up formula, includes bolt head (2) and screw rod (4) be connected with bolt head (2), smooth surface (41) are established to screw rod (4) in its end that is close with both junctions of bolt head (2), screw rod (4) are established to screw thread section (42) in its end back on the back with both junctions of bolt head (2), the cover is equipped with gasket (411) on smooth surface (41), its characterized in that: the bolt head (2) is sleeved with an internal tooth ratchet wheel (3), the bolt head (2) is hinged with a screwing pawl (22) capable of being meshed with the internal tooth ratchet wheel (3), the bolt head (2) is provided with a pawl groove I (24) matched with the screwing pawl (22), and a reset leaf spring (26) is arranged between the screwing pawl (22) and the pawl groove I (24).

2. A screw-down bolt as claimed in claim 1, wherein: the bolt head (2) is hinged with a loosening pawl (23) opposite to the direction of the tightening pawl (22), the internal tooth ratchet wheel (3) is overturned and sleeved on the bolt head (2) and then can be meshed with the loosening pawl (23), a pawl groove II (25) matched with the loosening pawl (23) is formed in the bolt head (2), and a reset leaf spring (26) is arranged between the loosening pawl (23) and the pawl groove II (25).

3. A screw-down bolt as claimed in claim 2, wherein: a slot II (251) is formed in the slot wall of the pawl slot II (25), and an inserting piece II (231) capable of being inserted into the slot II (251) is connected in the unscrewing pawl (23) in a sliding mode.

4. A screw-down bolt as claimed in claim 3, wherein: and a sliding groove II (233) matched with the sliding track of the inserting piece II (231) is formed in the unscrewing pawl (23), and a driving lever II (232) capable of penetrating through the sliding groove II (233) is fixedly arranged on the inserting piece II (231).

5. A screw-down bolt as claimed in claim 1, wherein: slot I (241) have been seted up on the cell wall in pawl groove I (24), it has inserted sheet I (221) that can insert in slot I (241) to screw up pawl (22) sliding connection.

6. A facilitate-tightening bolt according to claim 5, wherein: the screwing pawl (22) is provided with a sliding groove I (223) matched with the sliding track of the inserting piece I (221), and the inserting piece I (221) is fixedly provided with a driving lever I (222) capable of penetrating through the sliding groove I (223).

7. A screw-down bolt as claimed in claim 1, wherein: the internal tooth ratchet wheel (3) is hexagonal prism-shaped.

8. A screw-down bolt as claimed in claim 1, wherein: and the smooth surface (41) is sleeved with a bearing sheet (21) which is fixedly attached to the lower end surface of the bolt head (2).

9. A screw-down bolt as claimed in claim 1, wherein: and a chamfer (43) is formed at one end of the screw rod (4) which is deviated from the connecting end of the bolt head (2).