CN1793675A

CN1793675A - Anti loosening nut

Info

Publication number: CN1793675A
Application number: CN 200610048927
Authority: CN
Inventors: 赖先玉
Original assignee: Individual
Current assignee: North Shanghai Gas Business Co Ltd; YUHUAN GAS APPLIANCE INDUSTRY Co Ltd
Priority date: 2006-01-06
Filing date: 2006-01-06
Publication date: 2006-06-28

Abstract

The invention provides an anti-dismounting nut, belonging to the field of mechanical technique, comprising an inner core and a shell jacketed outside the inner core, where the inner surface of the inner core has a screw thread, the end surfaces of both the inner core and the shell have stop edges, the inner surface of the shell and the outer surface of the inner core are made with an annular groove each in the same position, a fastening spring is arranged between the two annular grooves, the outer surface is provided with several elastic plates, one end of each elastic plate is fixed on the inner core and the other end extends to a rotating direction of loosening the inner core, the inner surface of the shell is provided with several slopes for stopping the elastic plates. It has simple structure, machining convenience, lower cost, and mounting simplicity.

Description

Anti-assembling nut

Technical field

The invention belongs to field of mechanical technique, relate to a kind of fastening piece, particularly a kind of anti-assembling nut.

Background technique

It is very extensive that nut connects application, is exactly to adopt nut to be connected usually as gas meter and gaspipe line.Because gas meter is loaded in the user family, steal the gas behavior in order to prevent violation, and the installment work that makes things convenient for gas meter, adopt a kind of anti-assembling nut easy to connect just to seem necessary.

Chinese patent 97230082.1 provides a kind of " anti-assembling nut ", and it is made up of inner core and outer core.Inner core is loaded on outer in-core, and the side of inner core along the circumferential direction offers several slope grooves, the slope groove and outside the cylindricality needle roller is housed between the in-core side.The deep end of outer core along groove slope groove rotated during anti-assembling nut when mounted, at this moment, needle roller shifts out from slope groove depth end, and is stuck between the inboard of the slope groove of inner core and outer core, drive inner core by frictional force and together rotate, thereby make inner core be bolted on the link.After inner core was installed on the link, outer core rotated along the shallow end of slope groove, the deep end that needle roller moves to the slope groove not with outer in-core side contacts, inner core can't be by outer core drive.Obviously, just can not dismantle after anti-assembling nut installs.But the core arrangement of above-mentioned anti-assembling nut is complicated, needs to offer several slope grooves in its outside, and processing technology is numerous and diverse, has increased product cost.Simultaneously, in installation process, needle roller will be put into the slope groove earlier and reinstall outer in-core portion, because the needle roller number is more, difficulty is installed.

Existing other anti-assembling nut exists all also that parts are many, the defective of complex manufacturing.

Summary of the invention

The objective of the invention is provides a kind of anti-assembling nut of novel structure at the existing the problems referred to above of existing anti-assembling nut, makes it have characteristics such as simple in structure, easy for installation, that cost is low.

Purpose of the present invention can realize by following technical proposal: this anti-assembling nut comprises an inner core and is socketed in the shell in the inner core outside, the inner side surface of inner core has screw thread, the end face of inner core and the end face of shell all have the retaining edge, on the outer side surface same position of the inner side surface of shell and inner core, have annular groove, a jump ring is loaded onto between two annular grooves stating, it is characterized in that, the outer side surface of described inner core is provided with several spring sheets, one end of spring sheet is fixed on the inner core, the other end extends to the sense of rotation that inner core is eased out, and the side is provided with several slopes that is used to stop spring sheet in the enclosure.

In above-mentioned anti-assembling nut, described slope is formed by facing directly with the inclined-plane, and above-mentioned spring sheet extending end can withstand on to be faced directly.

When this anti-assembling nut is installed, inner core is placed the joint.Rotate the shell in the inner core outside, face directly along shell and face the extending end that is against spring sheet when direction is rotated directly.Like this, shell also just drives inner core and together rotates, until inner core is screwed onto the joint in rotating process.

After inner core installs, the shell counter-rotation, the inclined-plane of shell upslope contacts with the extension part of spring sheet, and the inclined-plane slips over through the extension part of spring sheet, rotates and can't drive inner core.Therefore, just can't unload after in a single day anti-assembling nut installs.

In above-mentioned anti-assembling nut, be provided with a pin that both are connected between described inner core retaining edge and the shell retaining edge.After pin was connected inner core and shell, it is identical that this anti-assembling nut temporarily plays a part common nut.Particularly, operation such as in being installed, the anti-assembling nut process can tightening or ease out.After nut and being connected of pipe are determined,, pin is fractureed as long as apply bigger torsion.At this moment, this anti-assembling nut just can only be tightened and can't unload.

In above-mentioned anti-assembling nut, described spring sheet is the outer side surface that is uniformly distributed in inner core.

In above-mentioned anti-assembling nut, described slope is the inner side surface that is uniformly distributed in shell.

Compared with prior art, this anti-assembling nut only is made up of shell, inner core and spring sheet, and is therefore simple in structure, easy to process, cost is lower.Simultaneously, locate by the pin that is located between inner core and the shell when anti-assembling nut is installed, the dress again of can in time back-outing after the assembling dislocation is so installation process is easy, easy to implement.

Description of drawings

Fig. 1 is the structural representation of anti-assembling nut provided by the invention.

Fig. 2 is the structural representation of inner core in the anti-assembling nut.

Fig. 3 is the A-A sectional view along Fig. 2.

Fig. 4 is the structural representation of shell in the anti-assembling nut.

Fig. 5 is the B-B sectional view along Fig. 4.

Fig. 6 is the linkage structure schematic representation of this anti-assembling nut.

Fig. 7 is the partial view of shell upslope in this anti-assembling nut.

Among the figure, 1, inner core; 11, retaining edge; 12, pin-and-hole; 13, annular groove; 2, shell; 21, retaining edge; 22, slope; 221, face directly; 222, inclined-plane; 23, pin-and-hole; 24, annular groove; 3, spring sheet; 4, pin; 5, fixing pin; 6, jump ring.

Embodiment

As shown in Figure 1, this anti-assembling nut is loaded on the gaspipe line, by it gas meter is connected with gaspipe line.

This anti-assembling nut comprises an inner core 1 and a shell 2, and shell 2 is socketed in the outside of inner core 1.As shown in Figure 2, the inner side surface of inner core 1 has screw thread, by screw thread inner core 1 is screwed onto on the interface of gas meter.The outer side surface of inner core 1 four the equally distributed spring sheets 3 that are being connected, in the present embodiment, the end that fixing pin 4 passes spring sheet 3 is connected in it on inner core 1, sees shown in Figure 3.The other end of spring sheet 3 extends outward.

As shown in Figure 4 and Figure 5, the inner side surface of shell 2 is provided with seven equally distributed slopes 22.Slope 22 by face directly 221 and inclined-plane 222 form, see shown in Figure 7.And facing directly of slope 22 is 221 relative with the direction of the extension of spring sheet 3.As can be seen, when inclined-plane 222 directions of shell 2 on it were rotated, inclined-plane 222 slipped over from the extension part of spring sheet 3, that is to say that shell 2 can not drive inner core 1 and rotate; When shell 2 counter-rotation, face 221 extension parts that are against spring sheet 3 directly on it, just can drive inner core 1 in shell 2 rotation processes and rotate.

As Fig. 2 and Fig. 3 and shown in Figure 4, the end face of the end face of inner core 1 and shell 2 all has retaining along 11,21, contact along 21 with retaining along 11 by retaining to make the inner core 1 can't be from the interior disengagings of shell 2.And the retaining of inner core 1 along 11 and the retaining of shell 2 be provided with a pin 4 between along 21, pin 4 is through the pin-and-hole 12 of inner core 1 and with pin-and-hole 23 on the shell 2 inner core 1 is connected with shell 2.If take place to misplace when maybe needing to reinstall in installation process, backward rotation shell 2 just can drive inner cores 1 by pin 4 and together rotate until withdrawing from.

As Fig. 1 and shown in Figure 6, when this anti-assembling nut is installed, inner core 1 is placed the jointing of gas meter.Rotate the shell 2 in inner core 1 outside, face 221 directions of shell on 2 along its are rotated.Obviously, the extension part of spring sheet 3 is butted on and faces directly on 221 in rotation process, and shell 2 just drives inner core 1 and together rotates, thereby inner core 1 is spirally connected on the gas meter interface.

After inner core 1 installed, shell 2 counter-rotation fractureed and get final product being connected pin 4 between inner core 1 and the shell 2.After in a single day pin 4 fractureed, the inclined-plane 222 on slope 22 contacted with spring sheet 3 extension parts during backward rotation shell 2 again.Like this, inclined-plane 222 slips over spring sheet 3, can't make shell 2 drive inner core 1 counter-rotation.That is to say, just can't unload in case anti-assembling nut installs the back.

As Fig. 1 and Fig. 2 and shown in Figure 5, on the outer side surface same position of inner side surface with inner core 1 of shell 2, have 13,24, jump rings 6 of annular groove and load onto between two annular grooves 13,24 of stating.By such structure shell 2 and inner core 1 are linked together.

Claims

1, a kind of anti-assembling nut, it comprises an inner core (1) and is socketed in the shell (2) in inner core (1) outside, the inner side surface of inner core (1) has screw thread, the end face of the end face of inner core (1) and shell (2) all has retaining along (11,21), on the outer side surface same position of the inner side surface of shell (2) and inner core (1), have annular groove (24), a jump ring (6) is loaded onto between two annular grooves (24) of stating, it is characterized in that, the outer side surface of described inner core (1) is provided with several spring sheets (3), one end of spring sheet (3) is fixed on the inner core (1), the other end extends to the sense of rotation that inner core (1) is eased out, and is provided with several slopes that is used to stop spring sheet (3) (22) at shell (2) inner side surface.

2, anti-assembling nut according to claim 1 is characterized in that, described slope (22) are formed by facing (221) and inclined-plane (222) directly, and above-mentioned spring sheet (3) extending end can withstand on to be faced directly on (221).

3, anti-assembling nut according to claim 1 and 2 is characterized in that, described inner core (1) retaining is provided with a pin that both are connected (4) along (11) and shell (2) retaining along between (21).

4, anti-assembling nut according to claim 1 and 2 is characterized in that, described spring sheet (3) is the outer side surface that is uniformly distributed in inner core (1).

5, anti-assembling nut according to claim 3 is characterized in that, described spring sheet (3) is the outer side surface that is uniformly distributed in inner core (1).

6, anti-assembling nut according to claim 1 and 2 is characterized in that, described slope (22) are the inner side surfaces that is uniformly distributed in shell (2).

7, anti-assembling nut according to claim 3 is characterized in that, described slope (22) are the inner side surfaces that is uniformly distributed in shell (2).