CN2268798Y - Pin for connecting construction components - Google Patents

Abstract

The utility model relates to a pin (1) used for connecting two components (2, 3) having round or long cross sections and holes with cylindrical or parallel side walls. The pin (1) is provided with a screw rod (15) extended along axial direction, and a grip (4) extended outwards is fixed to the screw rod (15) for rotating with the screw rod (15). The grip can be used as an outer clamping piece, a supporting pin or a similar part is arranged on the other end of the screw rod (15), and a locking device pushed outwards from the pin (1) along radial direction under the action of the supporting pin is arranged.

Description

The pin that mating formation is used

The utility model relate to a kind of be used for connecting be provided with circular or microscler cross section, and have the pin of two structural members in the hole of cylindrical shape or parallel side wall.Such structural member can be, for example, and the structural member that gets up with Bolt Connection removably.But, use the Bolt Connection more complicated, and when being shaped on respective threads on the structural member, often be not easy to connect.If two structural members also will be with welding be linked together them the time fixing after, the particulate that splashes during unavoidable welding can stick on the screw thread.

The purpose of this utility model is to provide a kind of pin, with this pin can be simple and direct two members, promptly be linked together, and most importantly, link up and be easy to.

According to the utility model, above-mentioned purpose is achieved in that pin is provided with a screw rod that extends along axial direction, is fixed with a handle that radially outwards enlarges or the outer retaining member of analogous shape on it.The other end of screw rod is provided with ejector pin or other similar part, can it radially be ejected from pin with the locking device mating reaction.

Pin passes two cylindrical or microscler, as to be aligned with each other through holes, rotates handle, locking device is ejected, and be locked in the another side of through hole.Structural member towards being hooked turns screw rod, and handle promptly is pulled, and two members just are clamped together.

If will dismantle connection, must oppositely turn handle, ejector pin just leaves locking device like this, can extract pin.

According to the utility model, ejector pin preferably is positioned at handle is opposite on the screw rod the other end and at the other end of ejector pin one cone-shaped section is arranged.When screw rod being screwed into when going in the pin, cone-shaped section just outwards ejects locking device.

Like this, just provide a kind of very easy and operate reliable structure.

According to a better implement example of the present utility model,, one section ejector pin that the transverse section is less is arranged, and locking device is being pressed on the ejector pin on the embedded location at an end of cone-shaped section.So just prevented that locking device from entering pin inside unfetteredly.

According to a better implement example of the present utility model, locking device is made of the ball in several radial holes that are installed in the pin shell.

Using ball is very favourable as locking device, because ball is wear-resistant, convenient to load and transport and cheap.

And ball can be embedded as it and in the radial bore of establishing at an easy rate.

Therefore the radial bore of holding ball can process from the outside very simply, and can close up on some points in the shell outside at least later on.

Therefore, the ball that is contained in the opening just can not drop out from the hole.

According to the utility model,, then more favourable if the blind hole that can hold screw rod is set in the pin shell.

Like this, the pin shell seals in its lower end, can prevent to cause the connecting dirt of inefficacy or the particulate that splashes of welding enters.

According to the utility model.As an end that on the pin shell, is used for injecting screw rod the annular flange that one usefulness roll extrusion forms is set, can further improves above-mentioned protective action.In the end assemble after the pin,, pin shell complete closed is lived bead roll extrusion inwards.

According to the utility model, when the circumferential groove that can embed rubber ring and so on is arranged on the pin shell, will be very favourable to the use of pin.

In turning the process of handle, rubber ring and so on applies braking force to the pin shell, and before locking device worked, the pin shell just can together not rotate with handle like this.

According to a further feature of the present utility model, if handle is a diameter than bigger cylindric of pin shell diameter, just more favourable, handle just can directly be used as clamping element like this.

According to the utility model, if the outer wall of cylindric handle has rolled decorative pattern, then the handle of pin has just further improved.

The handle of this structure is easy to hold and rotate.

In order to tighten pin easily, be provided with an instrument that can insert rotating screw bolt according to a better embodiment's of the present utility model handle.For example, can insert the center hole of hexagon wrench.

With reference to the accompanying drawings embodiment of the present utility model is described in detail.In the accompanying drawing:

Fig. 1 is handle and three stereograms as the pin of the ball of locking device that have through annular knurl;

Fig. 2 has represented to insert the view of two plate-like structure spares of pin;

Fig. 3 is the longitudinal section of pin shell;

Fig. 4 is the view of the screw rod of pin.

Indicate pin with label 1 among Fig. 1, it can be used for being fixedly connected two and has the structural member 2 and 3 of through hole as shown in Figure 2.Through hole on the structural member 2,3 is made the elongated opening of cylindrical shape or parallel sidewalls, also has very little gap so that insert pin (1) back.Pin 1 has a upper end that is provided with handle 4 and is connected and therewith rotates with screw rod 5.Screw rod 5 is through in the shell 6 of pin 1.This shell has the circular groove 7 that can hold rubber ring 8.Four radial holes 9 are arranged on the end portion of shell 6.Then, form closing in 10 from the outside at radial hole, ball then embeds the radial hole 9 from the inboard.Because the cross section in closing in metapore 9 outsides diminishes, ball just can't be deviate from from the hole fully, and stably remains in the hole.Be provided with a blind hole 12 in the shell 6 of pin.Be higher than in the blind hole 12 on radial hole 9 that part of and be shaped on internal thread 13.The upper end of the shell 6 of pin has one in assembling introversible ring-type bead 14 during pin.

Handle 4 is linked together together with screw rod 15 and rotates, and this screw rod can be screwed in the internal thread 13 of shell 6 of pin.The slightly little polished rod part 16 of diameter is between handle 4 and threaded bar portion 15, and bead 14 closes pin towards its turnup so that from above.Below threaded bar portion 15 is the column part 17 that has tapered segment 18 in the lower end.The lower end formation one of this polished rod part directly is positioned at the ejector pin 19 of tapered segment below.

When screw rod was in the position that is screwed to the top, ball 11 leaned against on the ejector pin 19.When screw rod was screwed in shell, ball 11 was remained on the outermost position these balls by column part 17 by tapered segment 18 outside ejections then.Ball leans against having fallen on the edge at angle of through hole of structural member 3 tightly, and rubber ring then stops pin to rotate with screw rod.When handle 4 also pressed closer on another structural member 2, ball will roll near the surface of living.The inboard of ball is on column part 17, and rolls on the surface that is tightly suppressed in the outside.So its rolling is equivalent to a kind of planetary driving device.

In order to apply bigger power pin is clamped, be provided with a hex hole 20 on the handle 4 in order to hold the hexagon wrench.

Claims (11)

1. one kind is used for connecting and has circular or microscler cross section, and have two agllutination members (2 in the hole and so on of cylindrical shape or parallel side wall, 3) pin (1), it is characterized in that, described pin (1) has a screw rod (15) that extends vertically, be fixed with handle of the radially outward expansion that threadedly to rotate together and so on it, described handle is made an outer retaining member, and have ejector pin (19) and so on to be arranged at the other end of described screw rod (15), and described ejector pin with locking device (ball 11) radially from outwards pushing of above-mentioned pin (1).

2. pin as claimed in claim 1, it is characterized in that, described screw rod (15) has one and is positioned at the end of leaving described handle (4) and having described ejector pin (19), described ejector pin has the end of leaving described screw rod (15), and has when screw rod is screwed into described pin the outside tapered segment of roof pressure of locking device (ball 11).

3. pin as claimed in claim 2 is characterized in that, described ejector pin (19) has a thinner part that is positioned at an end of described tapered segment (18), so that described locking device (ball 11) leans against when being positioned at retracted position on the described thin part.

4. any one described pin as in the above-mentioned claim is characterized in that described locking device comprises several balls (11), and described pin has and is provided with the shell (6) that ball can be held radial bore (9) within it.

5. pin as claimed in claim 4 is characterized in that, the described radial bore (9) that is used for holding ball (11) has several independent closing ins at least in the outside of described shell.

6. pin as claimed in claim 1 is characterized in that, described pin shell (6) is provided with the blind hole (12) in order to hold described screw rod (15).

7. pin as claimed in claim 6 is characterized in that, the end in order to allow described screw rod (15) insert of described pin shell (6) is provided with the annular flange that can inwardly turn over (14).

8. pin as claimed in claim 1 is characterized in that, described pin shell (6) is provided with a member that can be installed in rubber ring (8) in the circular groove (7) of its inside and so on.

9. pin as claimed in claim 1 is characterized in that, described handle (4) is cylindrical, and the external diameter of the more described pin shell of its diameter (6) is big.

10. pin as claimed in claim 9 is characterized in that, the outer surface of described cylindrical handle (4) has rolled decorative pattern.

11. pin as claimed in claim 1 is characterized in that, described handle (4) is provided with one in order to hold the instrument of turning, and for example is the center hole (20) of hex wrench.

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