JPH0640295Y2 - Rose assembly structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a structure for assembling a rose that covers the periphery of an insertion hole of a lever handle or a knob provided on a door.

[Conventional technology]

An example of a conventional rose assembly structure is shown in the longitudinal sectional view of FIG. 3, and its components are shown in a perspective view of FIG.

In the figure, the door D is provided with a handle insertion hole 1 penetrating both surfaces of the door D, and a plurality of screw holes 2 are provided around the handle insertion hole 1.

The screw hole 2 is for fixing the rose plate 3 including the cylindrical portion 3a and the flange portion 3b on the surface of the door D, and the machine screw 5 inserted into the hole 4 formed in the flange portion 3b is screwed. It is screwed into the hole 2.

A male screw 6 is provided on the outer peripheral surface of the cylindrical portion 3a, and a female screw 8 of a rose 7 that covers the rose plate 3 and the machine screw 5 is screwed onto the male screw 6.

Reference numeral 9 is an end cover that is inserted into an end portion of the rose 7 so that the rose 7 screwed into the rose plate 3 does not damage the door D.

A bush 10 is fitted to the inner peripheral surface of the cylindrical portion 3a of the rose plate 3, and the shaft 10 of the lever handle 11 is fitted to the bush 10.
Is rotatably inserted.

The lever handle 11 has an angular shaft 11b at the tip of the shaft neck 11a,
When the square shaft 11b is fitted into the square hole of the hub (not shown) in the box lock provided inside the door D and the lever handle 11 is rotated,
As the hub rotates, a latch bolt (not shown) protruding from the end of the door D is retracted into the door D so that the door D can be opened.

Since the outer surface of the rose 7 is a smooth surface having a metallic luster, the rose plate 3 to which the machine screw 5 is attached is attached.
It has a function of beautifying the appearance of the door D by coating the like.

FIG. 5 is a perspective view of a component showing another conventional rose assembly structure. The rose 12 is provided with engaging portions 13 projecting inward at a plurality of locations on the outer peripheral surface thereof. Engaging part 13,
A concave portion 14 for inserting a tool is provided between the portions 13 by cutting out the end surface.

The outer peripheral edge of the rose plate 15 is provided with an engaging concave portion 16 that is formed by cutting out the door mounting surface side of the rose plate 15 at a position facing the engaging portion 13 of the rose 12, and at a position facing the tool inserting concave portion 14. A groove 17 is engraved to receive the tip of the tool.

Then, rose on the rose plate 15 fixed to the door D.
When 12 is pressed to elastically fit the engaging portion 13 into the engaging recess 16, the rose 12 can be assembled to the rose plate 15 with one touch.

To remove the assembled rose 12, insert the tip of a tool such as a flathead screwdriver into the groove 17 and raise the tool so as to lift the recess 14, the engaging portion 13 will disengage from the engaging recess, and the rose 12 Leaves Rose Plate 15.

[Problems to be solved by the device]

However, the above-mentioned conventional rose assembly structure has the following problems.

(1) The rose assembly structure shown in FIGS. 3 and 4 has a drawback that parts are expensive because a rose plate in which a female screw is provided on a rose is provided with a male screw. Since it requires a lot of time and labor, the assembling work is troublesome, and the screw tightened may be loosened due to the impact such as the opening and closing of the door.

(2) On the other hand, in the rose assembly structure shown in FIG. 5, it is not necessary to provide a screw for screwing the rose and the rose plate together, and the structure is simple, and the rose is pressed against the rose plate. Although there is an advantage that it can be assembled by one-touch operation, it has a drawback that the door surface is damaged when the rose is lifted and removed.

The present invention has been made to solve such a problem.

[Means for Solving the Problems]

According to the present invention, the rose and the rose plate can be assembled with one touch without providing screws, and when removing the rose, no tools are used,
It is designed so that the door can be removed without damaging it.In the rose assembly structure in which the door mounting surface of the rose plate is fixed to the door surface and the rose is mounted on the rose plate, the inner peripheral surface of the rose A plurality of engaging projections on the surface of the rose plate, and an insertion guide recess for positioning the engaging projection on the surface of the rose plate, and the engagement at a position separated from the insertion guide recess toward the door mounting surface. An engagement recess into which the protrusion is elastically fitted is provided, and a spiral groove that opens to the surface of the rose plate is continuously provided via a neck portion shallower than the engagement recess.

[Action]

To assemble the rose assembly structure configured as described above to the door, apply the engagement protrusion of the rose to the insertion guide recess of the rose plate and press the rose as it is, and the engagement protrusion is accompanied by elastic deformation of the rose. Slides on the outer peripheral surface of the rose plate and is fitted into the mounting recess, so that the rose can be mounted with a very simple one-touch operation.

After mounting the rose, it will not loosen or slip even if vibration or impact is applied to the door.

When it is necessary to remove the rose, when torque is applied in the direction in which the engagement protrusion rides on the shallow bottom neck, the engagement protrusion passes over the neck and passes through the spiral groove with elastic deformation of the rose. , Rose comes off.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a vertical cross-sectional view of the rose assembly structure, and FIG. 2 shows a perspective view of parts constituting the rose assembly structure.

In the figure, a plurality of screw holes 2 are provided around the handle insertion hole 1 of the door D, and the rose plate 18 is fixed to the door D by a machine screw 5 that is screwed into the screw hole 2. Similarly, the rose plate 18 is provided with flange portions 19 around the two holes 4 for inserting the machine screws 5, and a thick portion 20 is formed between the flange portions 19 and 19.

A hole 21 into which the shaft neck portion 11a such as a lever handle is inserted is provided at the center of the thick portion 0.

The hole 21 serves as an inner peripheral surface of a bearing that rotatably supports the shaft neck portion 11a, and a bearing portion 22 is provided so as to project on the opposite side of the door mounting surface 18a of the rose plate 18.

The rose 23 covering the rose plate 18 has a cylindrical portion 23b extending from the outer peripheral edge of a disk portion 23a having a hole 24 in the center.
Engagement projections 25 projecting from the circumferential surface of the cylindrical portion 23b at two locations of 23b.
Are provided by press working or the like.

The thick portion 20 of the rose plate 18 is provided with an insertion guide recess 26 for guiding the engagement projection 25, and an engagement recess 27 is provided in the insertion guide recess 26 in the direction of the door mounting surface 18a.

As shown in FIG. 1, when the engagement projection 25 is fitted into the engagement recess 27, the engagement projection is caused by the elastic deformation of the rose 23.
25 presses the engaging recess 27, and the rose 23
It is designed to be held stably.

A spiral groove 28, which opens on the opposite side of the door mounting surface 18a of the rose plate 18, is connected to the engagement recess 27.

The spiral groove 28 has a shallow bottom neck portion at a portion in contact with the engagement recess 27.
29 is provided so that the engagement protrusion 25 is difficult to enter the spiral groove 28. However, when the rotational torque in the arrow R direction is applied to the rose 23, the engagement protrusion 25 passes over the neck portion 29 and the spiral groove 28. You can enter.

Next, the operation of the rose assembly structure configured as described above will be described.

After fixing the rose plate 18 to the door by screwing the small screw 5 inserted into the hole 4 of the rose plate 18 into the screw hole 2 of the door D, the engagement protrusion 25 of the rose 23 is used for guiding the insertion of the rose plate 18. When the rose 23 is elastically deformed when pressed against the recess 26, the engagement protrusion 25 moves while sliding on the outer peripheral surface of the thick portion 20 and is fitted into the engagement recess 27.

At this time, the elastic deformation still remains in Rose 23,
The engagement projection 25 is locked in the engagement recess 27 with a pressing force.

Therefore, the rose 23 is stably held by the rose plate 18.

When it is necessary to remove the rose 23, when the rose 23 is gripped and turned in the direction of arrow R, the engaging projection 25 rides over the neck portion 29 and enters the spiral groove 28, and the engaging projection 25 becomes the spiral groove 28. The rose 23 is disengaged from the rose plate 18 when it slides along and reaches the opening of the spiral groove 28.

[Effect of device]

Since the present invention is configured as described above, it has the effects described below.

(1) It is not necessary to provide a screw for screwing the rose and the rose plate together, and the structure can be extremely simple.

(2) Assembling of the rose is completed by one-touch operation of inserting the elastic bush into the rose and the rose plate, so that the rose assembling time is greatly reduced.

(3) There is no risk that the rose will loosen due to an impact such as opening or closing the door.

(4) When it is necessary to remove the rose, the rose can be removed with one touch by removing the lever handle or the knob and then grasping the rose and applying a turning torque.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is a longitudinal sectional view of a rose assembly structure, FIG. 2 is a perspective view of parts constituting the rose assembly structure, and FIG. FIG. 4 is a vertical cross-sectional view of the rose mounting structure in the example, FIG. 4 is a perspective view of the constituent parts of FIG. 3, and FIG. 5 is a perspective view of the constituent parts of the rose mounting structure showing another conventional example. D ... Door, 2 ... Screw hole, 4 ... Hole, 5 ... Machine screw,
11 …… Lever handle, 11a …… Shaft neck, 18 …… Rose plate, 18a …… Door mounting surface, 23 …… Rose, 25 ……
Engagement protrusion, 26 ... Insertion guide recess, 27 ... Engagement recess, 28
...... A spiral groove.

Claims (1)

[Scope of utility model registration request] 1. A rose assembly structure in which a door mounting surface of a rose plate is fixed to a door surface and a rose is mounted on the rose plate, wherein a plurality of engaging projections are provided on an inner peripheral surface of the rose. An insertion guide recess for positioning the engagement projection is provided on the surface of the rose plate, and the engagement projection is elastically fitted at a position separated from the insertion guide recess toward the door mounting surface. An assembling structure of a rose, characterized in that a mating concave portion is provided, and a spiral groove opening to the surface of the rose plate is continuously provided via a neck portion shallower than the engaging concave portion.