JP7601387B2 - Door handle seat - Google Patents

Description

The present invention relates to a door handle base for attaching a door handle to a door.

Patent Document 1 describes a door handle seat that includes a circular seat plate and a cover as a door handle seat for attaching a door handle to a door. In the door handle seat described in Patent Document 1, the seat plate is fixed to the door with a set screw. The cover is a flat cap-like cover that has a circular top plate and a peripheral plate that is connected to the peripheral edge of the top plate and perpendicular to the door surface, and covers the seat plate so as to hide the set screw. The top plate of the cover has an insertion hole for the handle shaft in the center, and the inner peripheral surface of the peripheral plate abuts against the outer peripheral surface of the seat plate.

In the door handle seat described in Patent Document 1, a fixing mechanism for fixing the cover to the seat plate can be considered to have an engaging claw protruding from the inner peripheral surface of the peripheral plate and an engaged recess formed on the outer peripheral surface of the seat plate. With a fixing mechanism having an engaging claw and an engaged recess, the cover can be fixed to the seat plate simply by engaging the engaging claw with the engaged recess, making it easy to install the seat.

JP 2018-111941 A

However, when the cover fixing mechanism having an engaging claw and an engaged recess is applied to the door handle seat described in Patent Document 1, the cover is attached to the seat plate so that the inner peripheral surface of the peripheral plate and the outer peripheral surface of the seat plate are in contact with no gaps, so that the cover will not come off the seat plate even if it is subjected to an impact, for example, when the door is roughly opened or closed.

Therefore, for example, when a problem occurs with the door handle and the door handle base needs to be removed from the door, it is usually not possible to remove the cover from the base plate using only bare hands, and it is necessary to use a flathead screwdriver to pry into the gap between the cover and the base plate, which can result in damage to the door.

The present invention was made in consideration of the above problems, and its purpose is to provide a door handle seat that allows the cover to be easily removed from the seat plate by using only bare hands while still being secured to the seat plate with sufficient strength.

The door handle seat disclosed in the present application comprises a substantially circular seat plate (10), a cover (20), an engaging protrusion (30), and an engaged recess (40). The seat plate (10) has a first insertion hole (11) and an outer peripheral surface portion (12), and is fixed to the door (3). The handle shaft (2) is inserted into the first insertion hole (11). The handle shaft (2) rotates integrally with the door handle (1). The cover (20) has a peripheral plate portion (21) and a substantially circular top plate portion (22), and covers the seat plate (10). The peripheral plate portion (21) is disposed opposite the outer peripheral surface portion (12) of the seat plate (10). The top plate portion (22) has a second insertion hole (22a) through which the handle shaft (2) is inserted, and is connected to one axial end of the peripheral plate portion (21). The engaging protrusion (30) is formed on the inner peripheral surface portion (21a) of the peripheral plate portion (21) and one (21a) of the outer peripheral surface portion (12) of the seat plate (10), and engages with the inner peripheral surface portion (21a) and the other (12) of the outer peripheral surface portion (12), thereby fixing the cover (20) to the seat plate (10). The engaged recess (40) is formed on the inner peripheral surface portion (21a) and the other (12) of the outer peripheral surface portion (12), has a first edge portion (41) and a pair of second edges (42), and engages with the engaging protrusion (30). The first edge portion (41) is located in the opposite direction (X2) to the door direction (X1) toward the door (3). The pair of second edges (42) face each other in the circumferential direction (X3) of the seat plate (10) or the cover (20). The height of the first edge portion (41) of the engaged recess (40), based on the inner circumferential surface portion (21a) and the other of the outer circumferential surface portions (12), is made higher than the height of the pair of second edge portions (42).

The door handle seat disclosed in the present application further includes a pressing protrusion (50). The pressing protrusion (50) is formed on the inner peripheral surface portion (21a) and the other (12) of the outer peripheral surface portion (12) so as to extend along the first edge portion (41) at a position adjacent to the first edge portion (41). The pressing protrusion (50) presses the inner peripheral surface portion (21a) and the one (21a) of the outer peripheral surface portion (12) so that the peripheral plate portion (21) is separated from the outer peripheral surface portion (12) by a predetermined distance (H2). The predetermined distance (H2) is a distance smaller than the maximum height (H1) of the engagement protrusion (30) protruding from the inner peripheral surface portion (21a) and the one (21a) of the outer peripheral surface portion (12).

In addition, in the door handle seat disclosed in this application, the seat plate (10) has a stopper portion (16a). The stopper portion (16a) abuts against the top plate portion (22) when the engaging protrusion (30) is engaged with the engaged recess (40), and prevents the cover (20) from moving in the door direction (X2).

The door handle seat of the present invention allows the cover to be attached to the seat plate with sufficient strength, while allowing the cover to be easily removed from the seat plate using only bare hands.

FIG. 2 is an exploded perspective view of the door handle seat according to the embodiment of the present invention. FIG. 2 is a top perspective view of a seat plate according to the embodiment of the present invention. FIG. 3 is a bottom perspective view of the seat plate of FIG. 2 . 4(a) is a top view of a seat plate according to an embodiment of the present invention, (b) is a cross-sectional view taken along line AA in FIG. 4(a), and (c) is a bottom view of the seat plate in FIG. 5A is a top view of the cover according to the embodiment of the present invention, (b) is a cross-sectional view taken along line BB in FIG. 5A, and (c) is a bottom view of the cover in FIG. 6A is a top view of the door handle seat according to the embodiment of the present invention, (b) is a cross-sectional view taken along line CC in FIG. 6A, and (c) is a bottom view of the door handle seat in FIG. 6A. 13 is a bottom view showing the door handle base in preparation for removing the cover from the base plate. FIG.

Below, a door handle seat according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the embodiment described below is a preferred example for implementing the present invention, and therefore various technical limitations are imposed. However, the present invention is not limited to this embodiment unless otherwise specified in the following description to limit the invention.

<Embodiment>
A door handle seat according to an embodiment of the present invention will be described below with reference to Figs. 1 to 4. Fig. 1 is an exploded perspective view of the door handle seat according to the embodiment. Fig. 2 is a perspective view of the top of the seat plate according to the embodiment. Fig. 3 is a perspective view of the bottom of the seat plate of Fig. 2. Fig. 4(a) is a top view of the seat plate according to the embodiment. Fig. 4(b) is a cross-sectional view taken along line A-A of Fig. 4(a). Fig. 4(c) is a bottom view of the seat plate of Fig. 4(a).

As shown in Figures 1 and 2, the door handle seat according to the embodiment includes a substantially circular seat plate 10, a cover 20, an engaging protrusion 30, an engaged recess 40, and a pressing protrusion 50. A substantially circular shape is a shape that is close to a perfect circle that is recognized as a circle.

As shown in FIG. 1, the seat plate 10 has a shaft insertion hole 11 as a first insertion hole, and an outer peripheral surface portion 12, and is attached to the door 3. The handle shaft 2 is inserted into the shaft insertion hole 11. The handle shaft 2 rotates integrally with the door handle 1. In this embodiment, the seat plate 10 is made of resin.

In the embodiment, the door handle 1 is a lever handle and is attached to both sides of the door 3. The two door handles 1 on both sides of the door 3 are connected by a handle shaft 2 so that they rotate together. The door 3 is a hinged door and is locked in the closed state by a latch bolt 4. The latch bolt 4 is linked to the door handle 1, and when the door handle 1 is rotated, it retracts into the door 3, and the locked state of the door 3 is released.

As shown in Figs. 2 and 3, the seat plate 10 has a bottom surface 13, a top surface 14, and a screw insertion hole 15. The bottom surface 13 has a recess 13a and abuts against the surface of the door 3. The door handle 1 is attached to both sides of the door 3, so that two seat plates 10 are attached to both sides of the door 3. The two seat plates 10 are connected to the screw cylinders 5 by set screws 5a on both sides of the door 3 as shown in Fig. 1, and are integrally joined on both sides of the door 3 via the screw cylinders 5.

As shown in Figures 2 and 4, the top surface 14 of the seat panel 10 is a flat surface and has a cylindrical protrusion 16 around the shaft insertion hole 11. The protrusion 16 protrudes from the top surface 14 in the direction X2 opposite to the door direction X1 toward the door 3, and has a stopper portion 16a and a guide portion 16b.

The stopper portion 16a is a flat, annular surface formed at the tip of the protrusion 16. It abuts against the top plate portion 22 of the cover 20, which will be described later with reference to FIG. 5, etc., and prevents the cover 20 from moving in the door direction X2.

As shown in FIG. 2, the guide portion 16b is cylindrical and is connected to the inner peripheral edge of the stopper portion 16a so as to protrude further in the opposite direction X2 from the stopper portion 16a. The guide portion 16b guides the cover 20 so that the axis of the cover 20 is not inclined relative to the axis of the seat plate 10 when the cover 20 is attached to the seat plate 10.

Next, the cover 20 of the embodiment will be described with reference to Figures 5 and 6. Figure 5(a) is a top view of the cover according to the embodiment. Figure 5(b) is a cross-sectional view taken along line B-B in Figure 5(a). Figure 5(c) is a bottom view of the cover in Figure 5(a). Figure 6(a) is a top view of the door handle seat according to the embodiment. Figure 6(b) is a cross-sectional view taken along line C-C in Figure 6(a). Figure 6(c) is a bottom view of the door handle seat in Figure 6(a).

As shown in Figures 5 and 6, the cover 20 is in the shape of a flat cap, has a peripheral plate portion 21 and a substantially circular top plate portion 22, and covers the seat plate 10. Considering durability and design, the cover 20 is preferably made of metal.

The peripheral plate portion 21 is a short cylinder that is connected to the peripheral edge of the top plate portion 22 and faces the outer peripheral surface portion 12 of the seat plate 10.

The top plate portion 22 is connected to one axial end of the peripheral plate portion 21 and has a center hole 22a as a second insertion hole through which the handle shaft 2 is inserted. The center hole 22a comes into sliding contact with the guide portion 16b of the seat plate 10 when the cover 20 is attached to the seat plate 10. The center hole 22a comes into sliding contact with the guide portion 16b, so that the cover 20 is attached to the seat plate 10 so that the axis of the cover 20 is not inclined relative to the axis of the seat plate 10.

As shown in Figures 5 and 6, in this embodiment, the engaging protrusions 30 are formed on the inner peripheral surface 21a of the peripheral plate portion 21 and engage with the outer peripheral surface 12 of the seat plate 10 to fix the cover 20 to the seat plate 10. In this embodiment, two engaging protrusions 30 are formed by pressing from the outer peripheral surface of the peripheral plate portion 21 at opposing positions that are 180 degrees apart on the inner peripheral surface 21a.

As shown in FIG. 3, in the embodiment, the engaged recess 40 is a square recess formed on the outer peripheral surface 12 of the seat plate 10, has a first edge 41 and a pair of second edges 42, and is engaged with the engaging protrusion 30. The first edge 41 is a linear edge located in the opposite direction X2 on the outer peripheral surface 12. The pair of second edges 42 are linear edges formed to face each other in the circumferential direction X3 of the seat plate 10. The engaged recess 40 does not have an edge in the door direction X1, and is open in the door direction X1. In the embodiment, four engaged recesses 40 are formed at positions every 90 degrees on the outer peripheral surface 12.

The height of the first edge 41 based on the outer peripheral surface 12 is higher than the height of the pair of second edge portions 42. The height based on the outer peripheral surface 12 of the seat plate 10 is defined as a height that increases toward the radially outward direction of the seat plate 10. Conversely, the height based on the inner peripheral surface 21a of the cover 20 is defined as a height that increases toward the radially inward direction of the cover 20.

As shown in FIG. 3, the pressing protrusion 50 is formed on the outer peripheral surface portion 12 so as to extend along the first edge portion 41 at a position adjacent to the first edge portion 41. In the embodiment, the seat plate 10 has the pressing protrusion 50, so that the height of the first edge portion 41 based on the outer peripheral surface portion 12 is higher than the height of the second edge portion 42. As another means for making the height of the first edge portion 41 higher than the height of the second edge portion 42 without providing the pressing protrusion 50, it is possible to make the height of the second edge portion 42 lower than the height of the surrounding outer peripheral surface portion 12 while keeping the height of the first edge portion 41 equal to the height of the surrounding outer peripheral surface portion 12.

In addition, in the embodiment, the length of the pressing protrusions 50 is approximately equal to the overall length of the first edge portion 41, and the pressing protrusions 50 are adjacently arranged along the entire length of the first edge portion 41. However, the length of the pressing protrusions 50 may be shorter than the overall length of the first edge portion 41, or may be longer than the overall length of the first edge portion 41 and may extend to the left and right of the first edge portion 41 as long as it does not interfere with the removal of the cover 20, which will be described later with reference to FIG. 7.

The pressing protrusion 50 presses the inner peripheral surface portion 21a of the peripheral plate portion 21 so that the peripheral plate portion 21 is separated from the outer peripheral surface portion 12 by a predetermined distance H2, as shown in FIG. 6. The predetermined distance H2 is a distance smaller than the maximum height H1 that the engagement protrusion 30 protrudes from the inner peripheral surface portion 21a, as shown in FIG. 5.

In addition, in this embodiment, as shown in Figures 2 and 3, the tip 51 of the pressing protrusion 50 is formed into a slope whose height relative to the outer peripheral surface 12 increases as it approaches the door direction X1.

As described above with reference to Figs. 1 to 7, according to the door handle seat of the embodiment, the height of the first edge 41 based on the outer peripheral surface portion 12 is made higher than the height of the pair of second edges 42. Therefore, the engaging protrusion 30 is less likely to climb over the first edge 41 and come off the engaged recess 40, and the cover 20 can be prevented from coming off the seat plate 10 due to vibrations when opening and closing the door 3, and the cover 20 can be fixed to the seat plate 10 with sufficient strength. Note that since the vibrations when opening and closing the door 3 are perpendicular to the door surface, the relatively high height of the first edge 41 allows the cover 20 to be fixed to the seat plate 10 with sufficient strength.

In addition, because the height of the pair of second edges 42 is relatively low, the engaging protrusions 30 can easily climb over the second edges 42. Therefore, for example, by gripping the cover 20 with one's hand and applying force to rotate the cover 20 around the axis of the handle shaft 2, the engaging protrusions 30 can be moved to a position where they do not engage with the engaged recesses 40, as shown in FIG. 7.

By pulling the cover 20 in the opposite direction X2 in the state shown in FIG. 7, the cover 20 can be removed from the seat plate 10, making it easy to remove the cover even with bare hands.

As described with reference to FIG. 3, according to the door handle seat of the embodiment, the pressing protrusion 50 is formed on the outer peripheral surface 12 so as to extend along the first edge 41 at a position adjacent to the first edge 41, and the height of the first edge 41 based on the outer peripheral surface 12 is made higher than the height of the second edge 42. Therefore, for example, when the seat plate 10 is a resin molded product, it is easy to provide a precise height difference between the first edge 41 and the second edge 42 so that the cover 20 can be fixed to the seat plate 10 with sufficient strength and the cover 20 can be removed even with bare hands, making it easy to manufacture the door handle seat.

In addition, by providing the pressing protrusions 50, as shown in FIG. 6(c), a gap of a predetermined distance H2 can be created between the peripheral plate portion 21 and the outer peripheral surface portion 12, and friction between the peripheral plate portion 21 and the outer peripheral surface portion 12 can be reduced so that the cover 20 can be turned even with bare hands.

In addition, in the embodiment in which the inventors created a prototype of the present invention, the maximum height H1 of the engagement protrusion 30 is approximately 0.5 mm, while the height of the pressing protrusion 50 based on the outer peripheral surface portion 12 is 0.1 mm or less, and the actual pressing protrusion 50 is a small protrusion that is not noticeable to the naked eye.

In this way, by forming the very small pressing protrusions 50 at specific positions on the outer peripheral surface portion 12, whereas in the past, even if one tried to grab and turn the cover 20 with one's hand, it was impossible to do so with normal grip strength, it is now possible for an average adult male to grab the cover 20 with his hand and apply a certain amount of force, turn the cover 20 by hand, release the engagement between the engaging protrusions 30 and the engaged recesses 40, and remove the cover 20, making it easier to remove the cover so that it can be removed using only bare hands.

As described with reference to FIG. 2, in the door handle seat of the embodiment, the tip 51 of the pressing protrusion 50 is formed into a slope whose height relative to the outer peripheral surface 12 increases the closer it is to the door direction X1. Therefore, when attaching the cover 20 to the seat plate 10, the engaging protrusion 30 can easily climb over the pressing protrusion 50, making it easy to attach the cover 20 to the seat plate 10.

As described with reference to FIG. 2, according to the door handle seat of the embodiment, when the engaging protrusion 30 and the engaged recess 40 are engaged, the stopper portion 16a abuts against the top plate portion 22 of the cover 20, preventing the cover 20 from moving in the door direction X2. Therefore, the cover 20 can be prevented from moving further in the door direction X2 than when the engaging protrusion 30 and the engaged recess 40 are engaged. When the cover 20 is attached or removed, or when the door 3 is opened or closed, the edge of the peripheral plate portion 21 of the cover 20 abuts against the surface of the door 3, preventing the door 3 from being damaged. This makes it easy to attach and remove the cover 20 to and from the seat plate 10, and maintains the appearance of the door 3 in good condition for a long period of time.

The above describes an embodiment of the present invention with reference to the drawings (Figs. 1 to 7). However, the present invention is not limited to the above embodiment, and can be implemented in various aspects without departing from the gist of the present invention (for example, (1) below).

(1) In the above embodiment, the seat plate 10 is provided with the engaged recess 40, and the cover 20 is provided with the engaging protrusion 30, but this is not limited thereto, and the engaging protrusion 30 may be provided on the outer peripheral surface portion 12 of the seat plate 10, and the engaged recess 40 may be provided on the inner peripheral surface portion 21a of the cover 20. When the engaged recess 40 is provided on the cover 20, the circumferential direction X3 is the circumferential direction of the cover 20, and the height of the first edge portion 41 based on the inner peripheral surface portion 21a is made higher than the height of the pair of second edge portions 42. In addition, when the engaged recess 40 is provided on the cover 20, the pressing protrusion 50 is formed on the inner peripheral surface portion 21a, and the maximum height H1 of the engaging protrusion 30 is the maximum height at which the engaging protrusion 30 protrudes from the outer peripheral surface portion 12.

H1: maximum height; X1: door direction; X2: opposite direction; X3: circumferential direction; 1: door handle; 2: handle shaft; 3: door; 10: seat plate; 11: shaft insertion hole (first insertion hole);
12...Outer peripheral surface portion 16a...Stopper portion 20...Cover 21...Circumferential plate portion 21a...Inner peripheral surface portion 22...Top plate portion 22a...Center hole (second insertion hole)
30: Engaging protrusion 40: Engaged recess 41: First edge 42: Second edge 50: Pressing protrusion

Claims (3)

a substantially circular seat plate (10) having a first insertion hole (11) through which a handle shaft (2) that rotates integrally with the door handle (1) is inserted and an outer peripheral surface portion (12), and the seat plate (10) is fixed to the door (3);
a cover (20) that covers the seat plate (10) and has a peripheral plate portion (21) that is arranged to face the outer peripheral surface portion (12) of the seat plate (10) and a substantially circular top plate portion (22) that is formed with a second insertion hole (22a) through which the handle shaft (2) is inserted and that is connected to one end of the peripheral plate portion (21) in the axial direction;
an engaging protrusion (30) formed on an inner peripheral surface portion (21a) of the peripheral plate portion (21) of the cover (20) and one (21a) of the outer peripheral surface portion (12) of the seat plate (10), engaging with the inner peripheral surface portion (21a) and the other (12) of the outer peripheral surface portion (12) to fix the cover (20) to the seat plate (10);
an engaged recess (40) that is formed on the inner peripheral surface portion (21a) and the other (12) of the outer peripheral surface portion (12), and has a first edge portion (41) in a direction (X2) opposite to a door direction (X1) toward the door (3), and a pair of second edge portions (42) that face each other in a circumferential direction (X3) of the seat plate (10) or the cover (20), and the height of the first edge portion (41) based on the inner peripheral surface portion (21a) and the other (12) of the outer peripheral surface portion (12) is made higher than the height of the pair of second edge portions (42), and is engaged with the engaging protrusion (30);
A door handle seat having a door handle. The door handle seat according to claim 1, further comprising a pressing protrusion (50) that is formed on the inner peripheral surface portion (21a) and the other (12) of the outer peripheral surface portion (12) so as to extend along the first edge portion (41) at a position adjacent to the first edge portion (41), and presses the inner peripheral surface portion (21a) and the one (21a) of the outer peripheral surface portion (12) so that the engaging protrusion (30) is spaced from the outer peripheral surface portion (12) by a predetermined distance (H2) that is smaller than the maximum height (H1) that the peripheral plate portion (21) protrudes from the inner peripheral surface portion (21a) and the one (21a) of the outer peripheral surface portion (12). The door handle seat according to claim 1 or 2, wherein the seat plate (10) has a stopper portion (16a) that abuts against the top plate portion (22) when the engaging protrusion (30) is engaged with the engaged recess (40) and prevents the cover (20) from moving in the door direction (X2).

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