JPS5861317A - Hinge employing spring pin - Google Patents

Abstract

PURPOSE:To prevent play from being caused by wear in a door hinge or the like, by preparing a truncated-cone-shaped member softer than a spring pin which is used as the pintle of the hinge and by tightly inserting the member into the end of the pin so that the peripheral surface of the pin is tightly fitted on the inside of an insertion hole. CONSTITUTION:A spring pin 7 having a wave-shaped slit 7a is compressed against the elastic force of the pin so that the pin is inserted into flanged bushings 8 fitted in the pin insertion holes 5, 6 of a fixed member 1 and a movable member 3. A truncated-cone-shaped member 9 made of softer metal than the spring pin 7 is tightly inserted into the upper end 7b of the pin to expand the upper end in the radial direction to tightly fit the pin on the insides of the bushing 8 in the through hole 5 by elastic force. A hinge is thus constructed. Since the peripheral surface 7b' of the upper end 7b is strongly pushed on the inside of the insertion hole 5, play is prevented from being caused by wear.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hinge that can be applied to various types of equipment, and includes a hinge that is rotated relative to each other (a spring pin that is inserted between two members as a fulcrum shaft). This relates to the hinge used.

As you know, the fulcrum shaft of the hinge is usually made of solid material (cylindrical shaft).
However, in cases where the load on the fulcrum shaft is large, such as a heavy door hinge, the outer peripheral surface of the fulcrum shaft wears out early and its diameter becomes thinner, making it difficult for the fulcrum shaft to be inserted. It is easy for looseness to occur between the inserted holes. On the other hand, when a spring pin is used as the fulcrum shaft, the amount of wear on the outer circumferential surface is automatically reduced by the spring force, since the spring pin itself has a spring force that tends to expand in the radial direction. It can be corrected accordingly.

That is, the inner diameter of the spring pin is automatically enlarged by the spring force by the amount by which the outer circumferential surface is worn and the outer diameter becomes thinner, which has the advantage of preventing the above-mentioned rattling.

However, recently, if the spring pin rotates excessively within the insertion hole or abnormal twisting force is applied to the spring pin, the spring pin may move in the insertion hole. It has been found that there is a risk that the insertion hole may become misaligned in the axial direction and may come out of the insertion hole.

SUMMARY OF THE INVENTION The present invention aims to correct the above-mentioned defects and to provide a spring pin that can effectively prevent the spring pin from being removed from the insertion hole.

An embodiment in which the present invention is applied to an automobile door hinge will be described below with reference to FIGS. 1 to 3.

First, in FIG. 1, a pair of upper and lower bottle support pieces (21) are integrally provided on the metal fixing member +11 fixed to the body 11Il.Also, a metal movable member (upper and lower 31) fixed to the door gIllVC is provided. A bottle support part (41) formed in a U-shape and inserted between the two pin support pieces (21) is integrally provided in the central part of the C. Support piece (2) and pin support part 14
) has a pair of bottle insertion holes that are coaxial with each other +5
1 +61 is provided.

As shown in FIG. 2, spring bins (7) are inserted between each pair of bin insertion holes 151161.
The movable member 13+ is constituted by a hinge that can rotate about the spring pin (7) with respect to the fixed member +11. At this time, both bottle insertion holes (6
A pair of 7-lunged bushes (8) made of metal such as stainless steel are inserted upside down in advance into 1, and a spring pin (71) is passed through both bushes (8). Both upper and lower ends of the pin support piece (21) are inserted into the pin insertion holes (51) of the pin support piece (21). It is interposed in the gap between both sides and both bottle support pieces (2).The spring bin (7) shown here is a wavy spring bin with slits (7aJ) formed in a wave shape.

Then, the spring pin (7) resists the spring force and is reduced in the radial direction vc#iI with both pin insertion holes (5
) and both bushes (81; therefore, the spring bins (7) are elastically pressed to the inner peripheral surfaces of both the bin insertion holes (51) and both bushes (8;) by the spring force. It has become.

As shown in Figure 3, the spring bin (7)
Inside the upper end (7b) of the spring bin (7)
A metal conical wedge made of softer metal +9
1 is press-fitted. As a result, the upper end (7b) of the spring bin (7) is expanded in the radial direction by the wedge (9), and the outer peripheral surface (7b') of the upper end (7b) is It is firmly crimped to the surface (5 m) and is firmly attached.The upper end of this destemming 191 is provided with a true cylindrical skirt part (9a) 1, and a wedge (9).
By being completely press-fitted up to the skirt portion (9a), it is fixed at the press-fitting position. Mayu Kusabi (9)
) For press-fitting the upper end of the spring bin (7) (
7b) into the bottle insertion hole (51), 411!
19+ into the upper end <rb) Ic f. t7'j model 19H'! It is also possible to press fit into the inside of the lower end of the spring bin (7), or to press fit a pair of wedges (9) into the inner fills at both upper and lower ends of the spring bin (7).

Further, the hardness of the spring bottle (7) is specified in JISB-2808 as Guickers hardness, which is HV446-560. Further, the material of the wedge (9) is, for example, when the material of the spring bin (7) is copper for the spring, a soft structural steel, that is, a mild steel having an HV] of 60 to 170 is optimal. same(
Spring bin (71 is stainless steel (5US420J)
In the case of 2), the one of 5US304 has been subjected to deterioration treatment, and the one of )lV]60 to 170 is optimal.

By the way, as mentioned above, the upper end (71) of the spring bin (71)
bJ] Inner fiJJVc By press-fitting the wedge (9), its upper end (7t)) is attached to the upper bottle support piece 121.
K is firmly fixed. As a result, when the movable member (3) is rotated relative to the fixed member 111, the spring pin (7)
The upper end (7b) of the spring bottle (7) is never rotated in the upper bottle insertion hole (51).Also, even if an abnormal twisting force is applied to the spring bottle (7), the upper end (7b) There is no vibration inside the upper bottle insertion hole (51).

Therefore, it is possible to reliably prevent the spring ring bottle (7) from being accidentally removed downward from the upper bottle insertion hole (51 yen) due to vibration. Bottle insertion hole (5)
Since it is always elastically pressed against the inner peripheral surface of the spring pin (7), even if the outer peripheral surface of the spring pin (7) is worn due to the rotation of the movable member 13+, both bushes (8) and the lower pin There is absolutely no chance of looseness occurring between the manhole +51 and the spring bin (7).

By the way, in the case of car door hinges, the bottle insertion hole (5
The pull-out force of the spring bin (7) with respect to 1 is designated as 8
In the case of mm bottles, the conventional average weight was 200 kg, but a wedge (91) with an outer diameter 0.1 mm larger than the inner diameter of the spring bottle (7) was used, and this was inserted and removed as described above.
, the above-mentioned withdrawal force t! 1000-2000 kg lVc increases next.

Next, the present invention was applied to the hinge of the toilet lid of a Western-style toilet #! 2
An embodiment will be explained with reference to FIGS. 4 to 6.

First, in FIG. 4, a pair of fixing members (161) are fixed on the upper surface of the toilet main body 051, and a pair of pivot a mallets are integrally provided on the toilet seat ση inside these fixing members Q61. A pivot part ■ integrally provided on the toilet lid Q9 is arranged.And these pivot parts Q81 (to) are arranged.
are respectively fixed members Q61Vc and a pair of spring pins 2υ
The hinge is rotatably supported by the hinge.

That is, as shown in FIG. 5, each fixing member (161 has a bottle insertion hole configured as a blind hole,
The cal is provided with a pin insertion hole consisting of a through hole. And c of these pin insertion holes! 31
Inside r241, metal bushings such as stainless steel (mouth) are fixed by press-fitting or adhesive, and when these are inserted into the metal bushings, spring bin T2D receives the spring force. It is inserted against the

Then, the same pA@ as mentioned above is, for example, a valley spring bin (2
D's 4! One end (21a) of the r circumferential member aυ side has VcEE on the inside of the circumferential member aυ (21a).
is firmly fixed to the inner circumferential surface of the metal bushing 4 in the same manner as described above.In this case, even if the wedge (c) is inserted into and removed from the inside of the other end of each spring pin 3υ on the pivot portion (to) side. Alternatively, a pair of wedges may be press-fitted into both ends of the spring pin 2υ.

By the way, regarding the press-fitting of the wedge, by utilizing the fact that the pin insertion hole 3z is composed of one hole, insert one end of the spring bin (2D fil (21aJ) into the pin insertion hole [actually, a metal bushing). (C) At the same time, the wedge (C) is inserted into its one end (2).
It is possible to enter and exit within 1aJ.

That is, first, -i'm of the spring bin Qυ as shown in Fig. 6A.
ifj inside t21a)! (to) are fitted in a half-fitted state. Next, as shown in Figure 6B, insert one end (21a) into the pin insertion hole (221) and insert the wedge into the pin insertion hole (221).
It touches within the bottom surface of <22aJ. Next, as shown in Figure 6C (
The one end t21a) is further inserted into the pin insertion hole pP3, and the reaction force completely press-fits the wedge 1IIIT/c into the one end c21a). This press-fitting operation can be performed very easily by hitting the other end of the spring pin Qυ against a hammer.

By the way, as mentioned above, one end of the spring bin (211)
21a]? Insert a wedge @woko into 31# and one end +2
By firmly fixing 153 to the fixing member a6,
When the toilet lid [11 and the toilet seat aη are opened and closed, the spring pin circle rotates and generates an image, and the pin insertion hole (
It is reliably prevented from slipping out from the inside of 22 ρ).

-The spring pin Qυ whose end is fixed is always elastically pressed against the inner circumferential surface of the metal bush (to) ■.

Therefore, when opening and closing the toilet lid a9 and the toilet seat (171), the metal book 3.
When rotated around the outer circumference of 1, a moderate amount of frictional force is applied,
There is no inconvenience such as when the cow is released from the opened toilet lid αY and toilet seat αη, the lids are forced to close under their own weight.

In addition to the hinges shown in the above embodiments, the present invention can also be applied to, for example, a pillar of a press gusset or a direction indicating bottle incorporated in an automobile steering wheel (all of which are formed into a pin insertion hole of a blind hole). It can be applied to door hinges for rooms, etc., and various other hinges.

As described above, the present invention provides at least two
A spring pin as a fulcrum shaft is inserted between the two members, and a trapezoidal conical wedge made of a metal softer than the spring pin is provided. ! !
By press-fitting the spring bottle into at least one end of the spring bin, one end of the spring bin is expanded in the radial direction, and the outer peripheral surface of the one end becomes the inner periphery of the insertion hole of the member into which it is inserted. Is it firmly crimped to the surface? Because the hinge uses a spring bin, when the hinge rotates, the spring hinge rotates or twists within the insertion hole and vibrates, which causes the spring bin to move in the axial direction. There is an advantage in that it is possible to extremely effectively prevent positional displacement and accidental removal from the insertion hole.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an exploded perspective view of the embodiment applied to an automobile door hinge, Fig. 2 is a cross-sectional view of the same assembled state, and Fig. 3 is an exploded perspective view of the embodiment applied to an automobile door hinge. It is an enlarged sectional view of the main part same as the above. Fig. 4 is a perspective view of the second embodiment applied to the hinge of the toilet lid of a Western-style toilet bowl, Fig. M5 is a sectional view of the main part of the same, and Figs. FIG. 3 is an enlarged cross-sectional view of the main parts for explaining the press-fitting operation of the model. Also, in the symbols used in the drawings, il+...Fixed member +31...Movable member 15+ 161...Bin insertion hole (7)
・・・・・・・・・Spring Bin 191 ・・・
...... Wedge (16+...Fixing member Q71...
・・・・・・Toilet seat a9・・・・・・・Toilet lid Qυ・・・・・・・Spring bin■@Q4)・
......Bin insertion hole (to)...
...It's a wedge. Agent Katsu Ueya Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] A hinge that is rotated relative to each other (a hinge formed by inserting a suspension shaft between two members as a fulcrum shaft)
A molded cone-shaped wedge made of a metal softer than the spring pin is provided, and by press-fitting this wedge into the inside of at least one end of the tin ring bottle, one part of the spring pin can be moved in the radial direction. A hinge using a spring pin, characterized in that the outer peripheral surface of one end of the hinge is crimped and fixed to the inner surface of the insertion hole VC9J of the member into which it is inserted.