JP4204417B2 - Connecting mechanism of square shaft and operation member - Google Patents

Description

  The present invention relates to a connecting mechanism (hereinafter simply referred to as a connecting mechanism) between an angular shaft and an operating member, and in particular, an operating member such as a handle connected to each other via an angular shaft penetrating the door is attached to the door in one operation. The present invention relates to a coupling mechanism that can be played and does not cause backlash.

  Here, the square axis is attached to the door so as to penetrate the free side edge of the door and the lock box embedded therein in the thickness direction, and the outer and inner operation members attached to both ends thereof. The movement is transmitted to the locking member of the lock box, and its existence is well known in the art.

  The present applicant has previously proposed a novel attachment mechanism of an escation to a door using Patent Documents 1 and 2 described later.

  In addition, as shown in FIG. 1, an escation is a pair of usually elongated panels that are mounted on the inner and outer surfaces of the door with the lock box embedded therein, sandwiching the free side edge and serving as a handle or knob mounting seat. It is a decorative board 1 and 2.

  Since this escation mounting mechanism is described in detail in Patent Documents 1 and 2, when briefly described, when the outer and inner escations 1 and 2 are pressed against predetermined positions on the inner and outer surfaces of the door, In FIG. 1, the lower coupler 3 is coupled.

Next, when the connecting rod 4 is inserted from the indoor side and the large-diameter head is pushed outward, the connecting rod 4 is rotated by the elastic force of the torsion coil spring 5, and the engaging claw 6 at the tip is engaged with the step (not shown). Since it stops, the escation can be attached by a simple operation without assembly work such as screwing.
Japanese Patent Application No. 2003-158084 Japanese Patent Application No. 2003-178115

  The present invention is a coupling mechanism for an operating shaft and a square shaft that can clamp the operating holes 7 and 7 of the operation member such as the handle and prevent the escation from loosening and floating. The purpose is to provide.

In order to achieve the above object, the invention according to claim 1 is characterized in that an outer operation member is attached to the outer end portion and a square shaft having a female screw hole formed in the inner end portion is passed through the door from the outdoor side. An end is protruded indoors, and a rectangular tube-like bush having a flange formed at one end is fitted into the inner end of this angular shaft in an interference-fit manner, and the flange is fitted to the inner surface of the door. The inner operating member and the outer operating member are pushed toward each other in a state where the bush and the angular shaft are fitted in the insertion hole opened at one end of the inner operating member, so that the friction between the bush and the angular shaft is caused. The door surface or escation is stably sandwiched between the flange of the bush and the outer operation member that holds the angular axis firmly by engagement and stably holds the relative position in the length direction of the angular axis. , Through a long screw hole in the length direction of the square axis opened in the inner operation member, By screwing the internally threaded hole and screwed in the shaft, characterized in that combining square shaft and an inner operating member to each other.

  The invention according to claim 2 is characterized in that the bush is made of a synthetic resin.

  In the present invention, since the bush can be stably and firmly fixed to a predetermined position of the angular axis by friction engagement between the bush and the angular axis, the escation is sandwiched between the external operation member and the bush. Can keep the attachment state of the escation stably without any play.

  The present invention can also be applied to doors that are not equipped with an escation. In this case, the operation member is not loose or loose with a simple structure in which the bush is fitted to the square shaft in an interference fit manner. Various effects such as being able to be mounted on the door in a stable state.

  A simple structure that fits the bushing to the square shaft in an interference-fitting manner for the purpose of stably mounting the operation member on the door without looseness or looseness, or maintaining the escation mounting state stably. Realized.

An embodiment of the present invention will be described below with reference to the drawings.
2 and 3, reference numeral 8 denotes an angular axis. The angular axis 8 is a rectangular body having a rectangular cross section similar to that of the conventional angular axis, and has a pin hole 9 at an outer end portion thereof (at the left end portion in the drawing). However, female screw holes 11 are opened at the inner end portions.

  Also in the present invention, in the same manner as in the conventional coupling mode between the external operation member and the angular axis, the shaft portion of the external operation member 12 and the split pin 13 (see FIG. 3) penetrating the angular axis 8 inserted therein. Combined so that it cannot be easily separated.

  On the other hand, as shown in FIG. 3, a bush 15 with a flange 14 is fitted to the inner end portion of the square shaft with the flange 14 facing the door.

  As shown in FIGS. 4 to 6, for example, the bush 15 has a thin rectangular tube shape with a disk-like flange 14, and the bush 15 and the square shaft 8 are fitted with a so-called interference fit. .

  Here, the interference fit refers to a form of fitting in which the gap when the bush 15 and the square shaft 8 are fitted is negative. In this case, the bush 15 slightly expands outward due to elastic deformation, and the square tube is original. The angular shaft 8 is tightened by the elastic force to return to the position, and a strong frictional engagement occurs between the two.

  Incidentally, in the illustrated embodiment, as shown in FIG. 6, a predetermined width and a predetermined width are provided at the corners of the inner cylinder of the square tube so that the fitting between the square shaft 8 and the bush 15 is an interference fit. When a protrusion 16 having a small length, that is, a protrusion 16 having a small protrusion amount in the direction of the central axis of the rectangular tube, is formed and fitted to the square shaft 8, stress is concentrated on the protrusion and elastic deformation occurs at this portion. Designed to result.

  The material of the bushing 15 is such that the bushing 15 can move along the angular axis 8 without interfering with the angular axis 8 from the viewpoint that it is easily elastically deformed, and even when fitted with an interference fit. For example, a nylon synthetic resin is desirable.

  On the other hand, as shown in FIGS. 3 and 7, a stepped insertion hole 17 is formed coaxially with the shaft portion of the inner operation member 17.

  The fitting between the insertion hole 17 and the square shaft 8 or the bush 15 may be a so-called dead fit or a loose fit.

  Further, a screw hole 19 that is long in the length direction of the angular axis is opened at a predetermined angular position of the shaft portion of the inner operation member 17.

  In the connecting mechanism according to the embodiment of the present invention configured as described above, first, the angular shaft 8 having only the outer operation member mounted on the outer end thereof is connected to the mounting hole 7 (see FIG. 1) of the escation, the door, The inner end portion of the lock box is protruded indoors through a square hole (not shown).

  Then, the bush 15 and the inner operation member 17 are fitted to the inner end portion, and a set screw 21 (see FIG. 3) is temporarily screwed through the screw hole 19 into the female screw hole 11 of the square shaft.

  After that, for example, when the inner operation member 12 and 17 are held with both hands and the outer operation member 12 is fixed, the inner operation member 17 is pushed in the door surface direction, the bush 15 and the inner operation member 17 are integrated. Then, for example, the step portions of the inner and outer operation members 12 and 17 are joined to the chamfered portions of the escation mounting holes 17, respectively. And the inner operation member 17 are fixed.

  In this state, the inner and outer operation members 12 and 17 strongly hold the escations 1 and 2 from inside and outside the door surface, and this state is stably maintained by the frictional engagement between the bush 15 and the square shaft 8.

  Of course, the present invention is not limited to the tightening of the escation, but can be applied to the mounting of the operation member in a normal door to which the escation is not mounted.

Sectional drawing which shows the attachment mechanism of the escation which concerns on the previous proposal of the present applicant. The top view of a square axis. Sectional drawing of the connection mechanism by one Example of this invention. The front view of a bush. Side view of the bush. Sectional drawing of a bush. The top view of the axial part front-end | tip of an inner side operation member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer escation 2 Inner escation 7 Mounting hole 8 Square shaft 11 Female screw hole 12 Outer operation member 14 Flange 15 Bush 16 Projection 17 Inner operation member 18 Insertion hole 19 Screw hole 21 Set screw

Claims (2)

An outer operating member is attached to the outer end, a square shaft with a female screw hole formed in the inner end is inserted into the door from the outside of the door, and the inner end protrudes indoors. In addition, a rectangular tube-like bush having a flange formed at one end is fitted with an interference fit, with the flange on the inner surface of the door, and the bush and the square shaft are inserted into the insertion hole opened at one end of the inner operation member. The inner operating member and the outer operating member are pushed in a direction close to each other in the fitted state, and the angular axis is firmly gripped by the frictional engagement between the bush and the angular axis. A screw hole that is long in the length direction of the square axis that is open to the inner operation member while the door surface or escation is stably sandwiched between the flange of the bush that stably holds the relative position in the direction and the outer operation member Insert a screw into the square shaft and use a set screw that engages with the female screw hole on the square shaft. Square shaft and the operating member coupling mechanism, characterized in that joined the work member to each other.   2. The mechanism for connecting the square shaft and the operating member according to claim 1, wherein the bush is made of synthetic resin.

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