CN210565670U - Fastening connection structure for mechanical parts - Google Patents

Abstract

The utility model belongs to the technical field of the work piece is fixed, especially, be a machine part fastening connection structure, including first part, the bottom of first part is equipped with the second part, first screw hole and second screw hole have been seted up on first part and the second part respectively, first screw hole and second screw hole looks adaptation, the circular recess has been seted up at the top of first part, the circular recess is linked together with first screw hole, same countersunk screw is installed to first screw hole and second screw hole internal thread, countersunk screw's head is located the circular recess, the below of second part is equipped with the nut. The utility model relates to a rationally, the anticlockwise rotation can not take place for the nut reliably to the latch ring and the elasticity card strip through setting up to fastening nature between the part has been improved, and the setting up of countersunk screw makes the part surface level and smooth more, makes the performance of complete machine equipment better.

Description

Fastening connection structure for mechanical parts

Technical Field

The utility model relates to a fixed technical field of work piece especially relates to a machine part fastening connection structure.

Background

When a plurality of parts form an integral device, the parts are mutually fixed through fixing parts, so that the aim of integrating the plurality of parts is fulfilled.

However, most of the fixing methods used at present are to directly form threaded holes in parts and then fix the parts through bolts and nuts, and the method may be well fixed in a short period of time, but the bolts and the nuts will loosen due to external force after a long time, so that the whole equipment is affected and cannot be normally used.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a mechanical part fastening connection structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a fastening connection structure for mechanical parts comprises a first part, wherein a second part is arranged at the bottom of the first part, a first threaded hole and a second threaded hole are respectively formed in the first part and the second part, the first threaded hole is matched with the second threaded hole, a round groove is formed in the top of the first part and communicated with the first threaded hole, the same countersunk head screw is mounted in the first threaded hole and the second threaded hole in a threaded manner, the head of the countersunk head screw is positioned in the round groove, a nut is arranged below the second part, the bottom end of the countersunk head screw extends to the lower side of the second part and is in threaded connection with the nut, a cylinder is arranged at the bottom of the second part, a through hole is formed in the cylinder, the countersunk head screw penetrates through the through hole and is movably connected with the inner wall of the through hole, and an annular groove is formed in the cylinder, fixed mounting has the disc in the ring channel, fixed mounting has the elasticity card strip on the outer wall of disc, the top fixed mounting of nut has the cover dish, the cylinder contacts with the cover dish, fixed mounting has a plurality of latch ring on the outer wall of cover dish, one side fixed mounting that the elasticity card strip is close to the countersunk screw has the fixture block, fixture block and latch ring looks adaptation.

Preferably, the countersunk head screw is made of SCM alloy steel, and the minimum tensile strength of the countersunk head screw is 1220 Mpa.

Preferably, two connecting plates are symmetrically installed on the cylinder, mounting holes are formed in the two connecting plates, screws are arranged in the mounting holes, and the connecting plates and the second part are fixedly installed through the screws.

Preferably, the inner wall of the bottom of the circular groove is provided with a gasket, and the countersunk head screw penetrates through the gasket and is movably connected with the inner wall of the gasket.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, the device is matched with a nut, a cylinder, a through hole, an annular groove, a gasket, a countersunk head screw, a clamping ring, a disc and an elastic clamping strip through a first part, a second part, a first threaded hole, a second threaded hole, a circular groove, a gasket, the countersunk head screw, the nut, the cylinder, the through hole, the annular groove, the clamping ring, the disc and the elastic clamping strip, when the device is used, the gasket and the countersunk head screw are taken out firstly, then the gasket is placed in the circular groove, the countersunk head screw is screwed into the first threaded hole and the second threaded hole until the countersunk head screw is not screwed, then the cylinder is sleeved on the countersunk head screw and is fixed with the second part, then the nut is taken out, the nut is screwed on the countersunk head screw clockwise, the top of the nut is in tight contact with the bottom of the cylinder, and the elastic clamping strip is clamped between the two;

the utility model relates to a rationally, the anticlockwise rotation can not take place for the nut reliably to the latch ring and the elasticity card strip through setting up to fastening nature between the part has been improved, and the setting up of countersunk screw makes the part surface level and smooth more, makes the performance of complete machine equipment better.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic top view of the cylinder of the present invention.

In the figure: 1. a first part; 2. a second part; 3. a first threaded hole; 4. a second threaded hole; 5. a circular groove; 6. a gasket; 7. countersunk screws; 8. a nut; 9. a cylinder; 10. a through hole; 11. an annular groove; 12. a snap ring; 13. a disc; 14. an elastic clamping strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to fig. 3, the present invention provides a technical solution: a fastening connection structure for mechanical parts comprises a first part 1, a second part 2 is arranged at the bottom of the first part 1, a first threaded hole 3 and a second threaded hole 4 are respectively formed in the first part 1 and the second part 2, the first threaded hole 3 is matched with the second threaded hole 4, a circular groove 5 is formed in the top of the first part 1, the circular groove 5 is communicated with the first threaded hole 3, the same countersunk head screw 7 is mounted in the first threaded hole 3 and the second threaded hole 4 through threads, the head of the countersunk head screw 7 is positioned in the circular groove 5, a nut 8 is arranged below the second part 2, the bottom end of the countersunk head screw 7 extends to the lower side of the second part 2 and is in threaded connection with the nut 8, a cylinder 9 is arranged at the bottom of the second part 2, a through hole 10 is formed in the cylinder 9, the countersunk head screw 7 penetrates through the through hole 10 and is movably connected with the inner wall of the through hole 10, an annular groove 11 is formed in the cylinder, a disc 13 is fixedly arranged in the annular groove 11, an elastic clamping strip 14 is fixedly arranged on the outer wall of the disc 13, a sleeve disc is fixedly arranged at the top of the nut 8, the cylinder 9 is in contact with the sleeve disc, a plurality of clamping tooth rings 12 are fixedly arranged on the outer wall of the sleeve disc, a clamping block is fixedly arranged on one side of the elastic clamping strip 14 close to the countersunk head screw 7, and the clamping block is matched with the clamping tooth rings 12;

the countersunk head screw 7 is made of SCM435 alloy steel, the minimum tensile strength of the countersunk head screw 7 is 1220Mpa, two connecting plates are symmetrically arranged on the cylinder 9, mounting holes are respectively arranged on the two connecting plates, screws are arranged in the mounting holes, the connecting plates and the second part 2 are fixedly mounted through the screws, a gasket 6 is arranged on the inner wall of the bottom of the circular groove 5, the countersunk head screw 7 penetrates through the gasket 6 and is movably connected with the inner wall of the gasket 6, the gasket 6 is matched with the first part 1, the second part 2, the first threaded hole 3, the second threaded hole 4, the circular groove 5, the gasket 6, the countersunk head screw 7, a nut 8, the cylinder 9, a through hole 10, an annular groove 11, a latch ring 12, a disc 13 and an elastic clamping strip 14, when in use, the gasket 6 and the countersunk head screw 7 are taken out firstly, then the gasket 6 is placed in the circular groove 5, then the countersunk head screw 7 is screwed into the first threaded hole 3, until countersunk screw 7 is twisted motionlessly, then establish cylinder 9 cover on countersunk screw 7, and fix cylinder 9 and second part 2 mutually, take out nut 8 afterwards, clockwise twist nut 8 on countersunk screw 7, make the top of nut 8 and the bottom in close contact with of cylinder 9, elasticity card strip 14 card advances between two latch rings 12, thereby make reliably fixed between countersunk screw 7 and the nut 8, the utility model relates to a rationally, latch ring 12 and elasticity card strip 14 through setting up can reliably make nut 8 can not take place anticlockwise rotation, thereby improved the fastening nature between the part, and the setting of countersunk screw 7 makes the part surface more level and smooth, makes the performance of complete machine equipment better.

The working principle is as follows: before use, a pair of internal hexagonal wrenches is prepared, when the first part 1 and the second part 2 need to be fixed with each other, the first threaded hole 3 and the second threaded hole 4 are aligned, the gasket 6 and the countersunk head screw 7 are taken out firstly, the gasket 6 is placed in the circular groove 5, the countersunk head screw 7 is screwed into the first threaded hole 3 and the second threaded hole 4 sequentially through the circular groove 5 and the gasket 6 by the internal hexagonal wrench until the countersunk head screw 7 is not screwed, the cylinder 9 is taken out and sleeved on the countersunk head screw 7, the cylinder 9 is fixed on the bottom of the second part 2 by the screw, the nut 8 is taken out, the nut 8 is screwed clockwise from the bottom end of the countersunk head screw 7, when the nut is screwed clockwise, the elastic clamping strip 14 cannot obstruct the screwing process until the top of the nut 8 is tightly contacted with the bottom of the cylinder 9, and the elastic clamping strip 14 is clamped between the two clamping tooth rings 12, make nut 8 can not counter-clockwise turning to can reliably fix between countersunk screw 7 and the nut 8, can not become flexible, like this, when needs are with first part 1 and second part 2 separation, only need pull out elasticity card strip 14 between two latch rings 12, and counter-clockwise turning nut 8 can.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (4)

1. The utility model provides a machine part fastening connection structure, includes first part (1), its characterized in that: the bottom of the first part (1) is provided with a second part (2), the first part (1) and the second part (2) are respectively provided with a first threaded hole (3) and a second threaded hole (4), the first threaded hole (3) is matched with the second threaded hole (4), the top of the first part (1) is provided with a circular groove (5), the circular groove (5) is communicated with the first threaded hole (3), the first threaded hole (3) and the second threaded hole (4) are internally provided with a same countersunk head screw (7), the head of the countersunk head screw (7) is positioned in the circular groove (5), a nut (8) is arranged below the second part (2), the bottom end of the countersunk head screw (7) extends to the lower part of the second part (2) and is in threaded connection with the nut (8), the bottom of the second part (2) is provided with a cylinder (9), seted up through-hole (10) on cylinder (9), countersunk screw (7) run through-hole (10) and with the inner wall swing joint of through-hole (10), ring channel (11) have been seted up on cylinder (9), fixed mounting has disc (13) in ring channel (11), fixed mounting has elasticity card strip (14) on the outer wall of disc (13), the top fixed mounting of nut (8) has the set dish, cylinder (9) contact with the set dish, fixed mounting has a plurality of latch ring (12) on the outer wall of set dish, one side fixed mounting that elasticity card strip (14) are close to countersunk screw (7) has the fixture block, fixture block and latch ring (12) looks adaptation.

2. The mechanical part fastening connection structure according to claim 1, wherein: the countersunk head screw (7) is made of SCM435 alloy steel, and the minimum tensile strength of the countersunk head screw (7) is 1220 Mpa.

3. The mechanical part fastening connection structure according to claim 1, wherein: two connecting plates are symmetrically installed on the cylinder (9), mounting holes are formed in the two connecting plates, screws are arranged in the mounting holes, and the connecting plates and the second part (2) are fixedly installed through the screws.

4. The mechanical part fastening connection structure according to claim 1, wherein: be equipped with gasket (6) on the bottom inner wall of circular recess (5), countersunk screw (7) run through gasket (6) and with the inner wall swing joint of gasket (6).

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