JPH07310465A - Handle setting seat for door - Google Patents

Abstract

PURPOSE:To attach a handle to a door simply and speedily in disusing an attaching screw as well as to make alignment with a cam hole of a lock performable easily and accurately. CONSTITUTION:A lock 19 equipped with plural pieces of centering guide holes 27 and a cam hole formed in a turning cam is installed in the inner part of a door 17. Two handle setting seats 30 and 32 are set up in both inner and outer surface positions of the door 17 corresponding to the centering guide holes 27 and the cam hole. Then these handle setting seats 30 and 32 are clamped tight to a concentrical position with the cam hole. Plural pipe shafts 31 being insertable into the centering guide holes 27 are in the handle setting seat 30 on one side. Likewise, an insert shaft 33 being fittable in the pipe shaft 31 is installed in the handle setting seat on the other. Subsequently the pipe shaft 31 and the insert shaft 33 are made connectible to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door handle mounting seat which does not require a mounting screw, can be mounted on a door simply and quickly, and can be easily and accurately aligned with a cam hole of a lock. .

[0002]

2. Description of the Related Art Generally, a mounting seat of this type is mounted on the inner and outer surfaces of a door so as to improve the appearance around the mounting base of a door handle. Conventionally, when mounting the mounting seat, a lock 2 is embedded in the side end of the door 1 as shown in FIG. 11, and the lock 2 is formed with a pair of centering guide holes 3 and 4 and a rotating cam 5. A square core rod insertion hole 6 is provided, and handle mounting seats 7 and 8 are positioned at inner and outer positions of the door 1 corresponding to the centering guide holes 3 and 4, and a mounting screw 9 is provided from one of the handle mounting seats 7. 9 is inserted, and this is screwed into the pipe screws 10, 10 of the other handle mounting seat 8 through the centering guide holes 3, 4 and tightened to fix the mounting seats 7, 8. Next, handle mounting seat 7,
The mounting seat covers 11 and 12 are attached to the outer periphery of 8, and the square core rod 14 integrated with one door handle 13 is inserted into the square core rod insertion hole 6, and this is attached to the shaft end portion of the other door handle 15. And they were fixed with screws 16.

However, this conventional structure requires mounting screws 9 and 9 for mounting the handle mounting seats 7 and 8, and the mounting work is troublesome, and at that time, the handle mounting seats 7 and 8 are mounted.
And the square core rod insertion hole 6 are eccentric, the shaft end of the door handle 13 comes into contact with the opening edge of the mounting seat 8, and the smoothness of the rotating operation is impaired. Among them, as the latter solution, a method of allowing the square core rod insertion hole 6 to have a larger diameter and allowing the eccentricity of the handle mounting seat 8 has been adopted, but in this case, the door handle 13 is loose. It has occurred and is sick.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem, eliminates a mounting screw, can be easily and quickly mounted on a door, and can easily and accurately perform centering with a cam hole of a lock. An object of the present invention is to provide a handle handle seat for a door.

[0005]

Therefore, in the door handle mounting seat of the present invention, a lock having a plurality of centering guide holes and a cam hole formed in the rotating cam is embedded in the door. , One of the handle mounting seats for doors is arranged at the inner and outer surface positions of the door corresponding to the centering guide hole and the cam hole, and these handle mounting seats are fixed at the concentric position with the cam hole. A plurality of pipe shafts that can be inserted into the centering guide holes are protrudingly provided on the other side, and an insert shaft that can be fitted to the above pipe shaft is provided on the other handle mounting seat so that the pipe shaft and insert shaft can be connected. Has been abolished, and it can be easily and quickly attached to the door, and the centering with the cam hole of the lock can be performed easily and reliably. Further, according to the present invention, the pitch of the pipe shaft is formed at the same pitch as the centering guide hole, the pitch of the insert shaft is made larger than the pitch of the pipe shaft, and the pipe shaft and the insert shaft are firmly connected. . Furthermore, according to the present invention, a plurality of protrusions are provided on the peripheral surface of the insert shaft in the axial direction so as to tightly fit with the pipe shaft and to strengthen the connection strength of both shafts.
According to the present invention, the insert shaft is formed of a polygonal columnar member, and the corner portions thereof are used as the protrusions to simplify the structure and manufacturing of the insert shaft and reduce the cost. According to the present invention, a slit communicating with the press-fitting hole is formed in the peripheral surface of the pipe shaft in the axial direction to increase the diameter expansion of the pipe shaft when the insert shaft is inserted. Further, according to the present invention, the insert shaft can be inserted into and removed from the pipe shaft so that the insert shaft can be attached and detached, and the door shaft of various thicknesses can be attached. Further, according to the present invention, the outer diameter of the fitting portion of the pipe shaft fitted with the insert shaft can be increased, the pipe shaft is tightly fitted in the centering guide hole, and the handle mounting seat is firmly locked. I am trying to install it.

[0006]

[Working] The invention according to claim 1 is such that one of the handle mounting seats is provided with a plurality of pipe shafts projecting from the centering guide hole, and the other handle mounting seat is fitted with the pipe shafts. A shaft is provided so that the pipe shaft and insert shaft can be connected. The handle mounting seat and the cam hole of the lock can be aligned easily and reliably. The mounting screws can be eliminated and the handle mounting seat can be easily and quickly mounted on the door. According to the invention of claim 2, the pitch of the pipe shaft is formed at the same pitch as the centering guide hole, the pitch of the insert shaft is made larger than the pitch of the pipe shaft, and the pipe shaft and the insert shaft are firmly connected. According to the third aspect of the present invention, a plurality of protrusions are provided on the peripheral surface of the insert shaft so as to project in the axial direction, so that the fitting with the pipe shaft is tight and the coupling strength between both shafts is strengthened. According to a fourth aspect of the present invention, the insert shaft is formed of a polygonal columnar member, and the corner portions thereof are used as protrusions to simplify the structure and manufacturing of the insert shaft and reduce the cost. In the invention of claim 5, a slit communicating with the press-fitting hole is formed in the circumferential surface of the pipe shaft in the axial direction, and the diameter of the pipe shaft is increased when the insert shaft is inserted. According to the invention of claim 7, which enables insertion / removal of insert shafts, attachment / detachment thereof, and attachment of doors of various thicknesses, the outer diameter of the fitting portion of the pipe shaft fitted with the insert shaft can be adjusted. The diameter can be expanded, the pipe shaft is tightly fitted in the centering guide hole, and the handle mounting seat is firmly attached to the lock.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 8, reference numeral 17 denotes a door, a longitudinal notch groove 18 is formed at a side end portion thereof, and a lock is provided at a bottom portion of the groove 18. A mounting hole 20 into which 19 can be embedded is opened.
A through hole 21 that communicates with is opened on the inner and outer surfaces of the door 17.

The lock 19 is formed in a box shape, an end plate 22 is integrally attached to a side end portion thereof, and a latch bolt 24 is disposed in a through hole 23 formed in the plate 22 so as to be retractable. Inside the lock 19, a rotary cam 25 for projecting and retracting the latch bolt 24 is attached so as to be rotatable by a predetermined angle, and an angular core rod insertion hole 26, which is a cam hole, is attached to the shaft end of the rotary cam 25.
Are formed, and centering guide holes 27, 27 are provided at symmetrical positions on both sides of the hole 26. The lock 19 shown
The key seat linked to the rotating cam 25 and the cam mechanism thereof are omitted.

A square core rod 29, which is an operating rod integrated with a door handle 28 arranged outside the door 17, is fitted into the square core rod insertion hole 26, and a sliver is attached to a half portion on the tip end side of the core rod 29. 29a is formed. Centering guide holes 27, 27
The pipe shafts 31, 31 integrated with the handle mounting seat 30 arranged outside the door 17 are inserted into the pipe shafts 31, 31 and the insert shaft integrated with the handle mounting seat 32 arranged inside the door 17 is inserted into the pipe shafts 31, 31. 33,33
Has been inserted.

In the case of the embodiments, the handle mounting seats 30 and 32 are made of synthetic resin having excellent mechanical and thermal properties, such as A.
It is made of BS resin, of which the handle mounting seat 30 is
As shown in FIGS. 3 and 4, a circular plate shape is formed, and a pipe collar 34 is projectingly provided at the center of the inside thereof, and the small diameter shaft portion 28a of the door handle 28 is housed inside the collar 34.

On the inner side surface of the handle mounting seat 30, a plurality of reinforcing ribs 35 are radially provided around the pipe collar 34. The reinforcing ribs 35, 35 sandwiching the collar 34 are symmetrically positioned with the pipe shaft 31, 31 is projected.
The pipe shafts 31, 31 are formed in a substantially straight tubular shape, their bases are formed with a slightly larger diameter and a larger thickness, and their pitch is set to the same pitch as the pitch of the centering guide holes 27, 27. Further, the length L from the inner surface of the mounting seat 30 is formed to be approximately twice the length of the collar 34,
Fitting holes 36, 36 having a circular inner cross section with an inner diameter D are formed therein. Slits 37, 37 communicating with the fitting holes 36, 36 are axially formed on the peripheral surfaces of the pipe shafts 31, 31 on the mutually opposite sides from the upper end of the base portion thereof to the tip thereof. It can be expanded when inserted.

In the figure, reference numeral 38 denotes an annular rib formed on the periphery of the outer opening of the pipe collar 34, which is engageable with the end surface of the large diameter shaft portion 28b of the door handle 28, and the handle mounting seat 30 excluding the rib 38. The outer peripheral surface of is painted in an appropriate color. Reference numerals 39 and 39 are concave grooves formed at a diametrical position on the inner end surface of the handle mounting seat 30, which are open to the side, and tools such as a screwdriver can be inserted into the grooves 39 and 39.

On the other hand, the handle mounting seat 32 is formed in a disk shape as shown in FIGS.
0 is projected, and a door handle 41 is provided inside the collar 40.
The small-diameter shaft portion 41a is accommodated.

On the inner side surface of the handle mounting seat 32, a plurality of reinforcing ribs 42 are radially provided around the pipe collar 40, and the insert shaft 33, at the symmetrical position of the reinforcing ribs 42, 42 sandwiching the collar 40. 33 is projected. The insert shafts 33, 33 are formed in a substantially straight shaft shape, the tip thereof is formed in a tapered shape, and the base portion is formed in a slightly larger diameter, and their pitch is slightly larger than the pitch of the pipe shafts 31, 31. The length L from the inner surface of the mounting seat 32 that is set is set to the collar 4
The length of the pipe shaft 31 is approximately twice as long as that of the pipe shaft 31, and the plurality of protrusions 43 are formed on the peripheral surface extending from the tip to the base.
Are formed in the axial direction.

As shown in FIG. 7, the protrusions 43 are provided in a triangular prism shape at equal angular positions on the peripheral surface of the insert shaft 33, and the outer diameters D of the opposing protrusions 43, 43 are the inner diameter of the pipe shaft 31. It is formed with the same diameter as. In the figure,
Reference numeral 44 denotes an annular rib formed around the outer opening of the pipe collar 40, which can be engaged with the end surface of the large-diameter shaft portion 41b of the door handle 41. The outer peripheral surface of the door handle mounting seat 30 excluding the rib 44 is It is painted in an appropriate color. 45,4
Denoted at 5 is a concave groove formed at a diametrical position on the inner end surface of the handle mounting seat 32, which is opened laterally so that a tool such as a screwdriver can be inserted into the groove 45.

In addition, reference numeral 46 in the drawing denotes a front plate which is superposed on the end plate 22, and a through hole 47 through which the latch bolt 24 can be put in and taken out is formed in the middle part thereof, and the plate 46 is provided with a screw 48, It can be attached to the door 17 together with the end plate 22. 49 and 50 are screw holes provided in the end plate 22 and the front plate 46, and 51 is a square hole formed in the shaft portion of the door handle 41, which is formed so as to be capable of fitting with the square core rod 29. Is a pin that connects the base end portion of the square core rod 29 to the large-diameter side shaft portion 28b.

9 and 10 show another embodiment of the present invention, in which parts corresponding to those in the above structure are designated by the same reference numerals. Among them, in the embodiment shown in FIG. 9, the four projections 4 are provided at equal angular positions on the peripheral surface of the pipe shaft 31 as described above.
Instead of providing three, three protrusions 43 are provided, and the protrusion 43
It is characterized by simplifying the structure for the reduction of the number of items and ensuring stable fitting force with the minimum number. In this case, the practical number of the protrusions 43 is preferably 3 to 6 in consideration of the production of the protrusions 43 and ensuring the contact surface pressure against the inner surface of the pipe shaft 31.
By setting the number to be six, the burden of strength on one protrusion 43 is reduced.

In the embodiment shown in FIG. 10, the pipe shaft 31 has a hollow rectangular cross section instead of the hollow circular cross section, and the insert shaft 33 has a square pole shape instead of the round bar, By using the corners as the projections 43, the structure of the insert shaft 33 is simplified, the manufacturing is facilitated, and the cost is reduced by using a general-purpose member, and the inner surface of the pipe shaft 31 having the flat corners is used. It is characterized in that the projection 43 can be prevented from slipping by engaging with, and the displacement of the both can be prevented. In this case, as an application example of the above-described embodiment, the insert shaft 33 may be configured in a triangular prism shape, a pentagonal prism shape, or a hexagonal prism shape instead of the rectangular column shape, and similarly, the pipe shaft 31 may be formed in the hollow rectangular cross section instead. It is also possible to make a hollow cross section of a triangle, a pentagon, a hexagon, or an ellipse or an oval, and by using a general-purpose member for these, the manufacturing cost can be reduced.

In the above embodiment, the handle mounting seat 3
Although 0 is attached to the outside of the door 17 and the handle attachment seat 32 is attached to the inside of the door 17, the present invention is not limited to this, and it is also possible to attach these to the opposite side. Further, in the above-described embodiment, the handle attaching seats 30 and 32 are applied to the door handles 28 and 41, but the present invention is not limited to this, and may be applied to, for example, a thumb turn seat and a corresponding key seat. .

In the door handle mounting seat thus constructed, the mounting screws and the mounting seat cover, which have been frequently used, are eliminated as will be described later, so that the number of parts is reduced accordingly, and the door handles 28, 41 are mounted. Can be performed easily and quickly, and the manufacturing cost can be reduced.

Next, when the door handles 28 and 41 are mounted by using the handle mounting seats 30 and 32 of the present invention, the notch groove 18 and the mounting hole 20 are previously formed on the end surface of the door 17 opposite to the suspension base side. And a through hole 21 communicating with the hole 20 is formed at a predetermined position on the inner and outer surfaces of the door 17 and placed.

Then, the lock 19 is inserted into the mounting hole 20 so that the end plate 22 is housed in the notch groove 18 and the plate 2
2 and the front plate 46 is superposed on these 2 and these screw holes 50,
A screw 48 is inserted into 49, and this is screwed into the door 17 and fixed. By doing this, the lock 19 is moved to the door 17
Embedded in the inside of the rotary cam 25, and the square core rod insertion hole 2
6 and the centering guide holes 27, 27 are exposed to the inside and outside of the door 17 through the through hole 21.

Under these circumstances, the handle mounting seat 30
Is inserted into the through hole 21 from the outside of the door 17, and the pipe shafts 31 and 31 are inserted into the centering guide holes 27 and 27, and the mounting seat 30 contacts the surface of the door 17. Then, the state is held.

Next, the handle mounting seat 32 is held and inserted into the through hole 21 from the inside of the door 17, and the insert shafts 33, 33 are connected to the pipe shafts 31, 31 at that time.
When the mounting seat 32 comes into contact with the surface of the door 17, the state is maintained.
By doing this, the protrusion 43 of the insert shaft 33 is formed.
Are pushed into the fitting holes 36 having the same diameter, and the slits 37, 37
Is pushed open and the fitting hole 36 is widened, and both shafts 3
1, 33 are integrally connected. This situation is shown in FIG.
As shown in (c), the pipe shaft 31 is expanded corresponding to the protrusion 43, and the deformed or expanded diameter portion presses the inner surface of the centering guide hole 27.

At this time, since the pitch of the insert shafts 33, 33 is slightly wider than that of the press-fitting holes 36, 36, the slits 37, 37 located outside are centered,
The diameter expansion of the fitting holes 36, 36 and the diameter expansion of the pitch thereof are enhanced, and the pitch of the pipe shafts 31, 31 gradually increases toward the distal end side. Therefore, the centering guide holes 27, 2
The contact surface pressure between the pipe 7 and the pipe shafts 31, 31 gradually increases toward the tip side, and the outer portions of the shafts 31, 31 are strongly pressed against the inner surfaces of the holes 27, 27, so that the shafts 31, The insert shafts 33, 33 are strongly held by the 31.

As a result, the handle mounting seats 30 and 32 are firmly held by the lock 19 and can withstand vibrations and shocks when the door 17 is opened and closed, while being urged to be aligned with the square core rod insertion hole 26. The pipe collars 34, 40 are coaxially positioned, and the square core rod insertion hole 26 of the rotary cam 25 is positioned at the center of them.

After that, one of the door handles 28 is held, and the square core rod 29 integrated with the handle 28 is inserted into the square core rod insertion hole 26 of the rotary cam 25 through the pipe collar 34, and the large size thereof is inserted. When the end surface of the radial shaft portion 28b contacts the annular ring 38, the state is maintained. Next, the other door handle 41 is held, the shaft portion of the handle 41 is inserted into the pipe collar 40, and the square hole 51 is inserted into the square core rod 29.
When the end surface of the large-diameter shaft portion 41b comes into contact with the annular ring 44, the state is held. After that, the fixing screw 52 is screwed into the sleeve 29a from the outside, and the door handle 41 is connected to the square core rod 29, thereby completing a series of mounting operations.

As described above, according to the present invention, the handle mounting seat 3 is used.
Since the mounting screws that have been frequently used in the past are eliminated when the 0 and 32 are mounted, the number of parts can be reduced and the complicated mounting work of the screws can be eliminated, which can be easily and quickly performed. Moreover, the pipe shafts 31, 31
Since no tensile force acts between the insert shaft 33 and the insert shaft 33, it is possible to prevent the deformation of the door 17 due to overtightening of the mounting screw as in the related art. In addition, the insert shafts 33, 33 are attached to the pipe shafts 31, 31.
By pushing in, the handle mounting seats 30 and 32 and the square core rod insertion hole 26 are naturally aligned, so that even an operator unskilled in this kind of work can easily and surely work.

Moreover, since the surfaces of the handle mounting seats 30 and 32 are coated with an appropriate color to eliminate the conventional mounting seat cover mounting, the number of parts is reduced in combination with the above.
The installation work can be simplified and the manufacturing cost can be reduced.
Further, since the pipe shafts 31 and 31 and the insert shafts 33 and 33 can be inserted and removed, it is possible to cope with various thicknesses of the door 17 by adjusting the amount of insertion and removal.

In this way, the handle mounting seats 30 and 32 are mounted on the inner and outer surfaces of the door 17, and this situation is as shown in FIG. Door handles 2 at 38 and 44
The end faces of the large-diameter shaft portions 28b and 41b of 8, 41 are engaged, and this state is held by the fixing screw 52.

Therefore, the fitting state of the pipe shafts 31 and 31 and the insert shafts 33 and 33 is maintained, and they do not slip out or rattle over the years. Further, when the door 17 is opened / closed or the door handles 28, 41 are used, no special external force or bending moment acts on the shafts 31, 33. There is no hindrance.

Further, since the handle mounting seats 30 and 32 and the cam hole 26 are accurately aligned, the door handle 2
After the mounting of 8, 41, the small-diameter shaft portions 28a, 41a are positioned coaxially with the pipe collars 34, 40 to prevent them from rubbing, and the handles 28, 41 can be operated smoothly and lightly.

Moreover, the end faces of the large-diameter shaft portions 28b, 41b of the door handles 28, 41 are connected to the unpainted annular ring 38,
Since it is engaged with 44, it is possible to prevent rubbing and baldness of other coated parts, while the annular rings 38, 44 are concealed by the large diameter shaft parts 28b, 41b and shielded from the outside. The appearance of the part can be improved.

When removing the handle mounting seats 30 and 32, the fixing screws 52 are loosened to remove the door handles 28 and 41.
Is pulled out from the pipe collars 34, 40, and the mounting seat 3
Insert a proper tool such as a screwdriver into the recessed grooves 39 and 45 that are open to the side of 0 and 32, and use these to pry apart both shafts 31 and 33, and pull them out. 17 replacements are accepted.

[0035]

As described above, the door handle mounting seat of the present invention has a plurality of pipe shafts projecting from one of the handle mounting seats and insertable into the centering guide holes, and the other handle mounting seat having the above-mentioned structure. Since the insert shaft that can be fitted to the pipe shaft is provided, the insert shaft can be fitted to the pipe shaft to connect them, and the handle mounting seat and the cam hole of the lock can be aligned easily and securely. There is an effect that it can be performed and a smooth handle operation can be realized. Therefore, it is possible to eliminate the mounting screw that has been conventionally used for this kind of purpose, eliminate the complexity of the work involved in mounting the screw, and easily and quickly attach the handle mounting seat to the door. Further, according to the present invention, the pitch of the pipe shaft is formed at the same pitch as the centering guide hole, and the pitch of the insert shaft is made larger than the pitch of the pipe shaft. Therefore, the pipe shaft and the insert shaft can be firmly connected. it can.
Furthermore, according to the present invention, since a plurality of protrusions are provided on the peripheral surface of the insert shaft in the axial direction, the fitting with the pipe shaft can be made tight and the connecting strength of both shafts can be strengthened. Moreover, according to the present invention, since the insert shaft is formed of the polygonal columnar member and the corners thereof are used as the protrusions, the structure and manufacturing of the insert shaft can be simplified, and the cost can be reduced accordingly. According to the present invention, since the slit communicating with the press-fitting hole is axially formed on the peripheral surface of the pipe shaft, the diameter of the pipe shaft is increased by inserting the insert shaft, and the pipe shaft and the centering guide hole are closely fitted. Can be encouraged. Further, according to the present invention, since the insert shaft can be inserted into and removed from the pipe shaft, the insert shaft can be attached and detached, and there is an effect that it can be attached to doors of various thicknesses. Further, according to the present invention, since the outer diameter of the fitting portion of the pipe shaft fitted with the insert shaft can be expanded, the pipe shaft can be tightly fitted into the centering guide hole, and the handle mounting seat can be firmly locked. Can be installed on.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a disassembled main part of the present invention.

FIG. 3 is a rear view showing an example of one handle attachment seat applied to the present invention.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, showing a slightly enlarged view.

FIG. 5 is a rear view showing an example of the other handle mounting seat applied to the present invention.

6 is a cross-sectional view taken along the line BB of FIG. 5, showing a slightly enlarged view.

7 is an enlarged cross-sectional view taken along the line CC of FIG.

FIG. 8 is a cross-sectional view showing a press-fitted state of a pipe shaft and a press-fitted shaft applied to the present invention, where (a) shows a state before the press-fitting, (b) shows a state after the press-fitting, (C) is an enlarged sectional view taken along the line D-D of FIG.

FIG. 9 is a sectional view showing a main part of another embodiment of the present invention.

FIG. 10 is a cross-sectional view showing the main parts of another embodiment of the present invention.

FIG. 11 is a perspective view showing an exploded main part of a conventional example of the present invention.

[Explanation of symbols]

 17 Door 19 Lock 25 Rotating Cam 26 Cam Hole 27 Centering Guide Hole 30, 32 Handle Mounting Seat 31 Pipe Shaft 33 Insert Shaft 36 Fitting Hole 37 Slit 43 Protrusion

Claims (7)

[Claims] 1. A lock having a plurality of centering guide holes and a cam hole formed in a rotating cam is embedded inside a door, and inner and outer surface positions of the door corresponding to the centering guide hole and the cam hole. In the handle mounting seat for doors that fixes the handle mounting seats to the cam hole and the concentric position of the cam mounting seats, one of the handle mounting seats is provided with a plurality of pipe shafts that can be inserted into the centering guide holes. A handle mounting seat for a door, wherein the other handle mounting seat is provided with an insert shaft that can be fitted to the pipe shaft so that the pipe shaft and the insert shaft can be connected. 2. The door handle mounting seat according to claim 1, wherein the pitch of the pipe shaft is formed at the same pitch as the centering guide hole, and the pitch of the insert shaft is larger than the pitch of the pipe shaft. 3. The mounting seat for a door handle according to claim 1, wherein a plurality of projections are axially provided on the peripheral surface of the insert shaft. 4. The door handle mounting seat according to claim 1, wherein the insert shaft is formed of a polygonal columnar member, and the corners thereof are used as protrusions. 5. The door handle mounting seat according to claim 1, wherein a slit communicating with the press-fitting hole is axially formed on the peripheral surface of the pipe shaft. 6. The door handle mounting seat according to claim 1, wherein the insert shaft can be inserted into and removed from the pipe shaft. 7. The door handle mounting seat according to claim 1, wherein an outer diameter of a fitting portion of the pipe shaft fitted with the insert shaft can be expanded.