HUB ASSEMBLY FOR DOOR HANDLE

Description

[0001] The present invention relates to a hub assembly for a door handle and to a related method. Existing door handle assemblies include various components that are assembled and mounted to a door. As doors can have varying thicknesses, existing door handle assemblies are generally made to accommodate a specific door thicknesses.

[0002] Documents CN 108 104 598 A and EP 1 258 581 A2 disclose examples of door handle assemblies which can be installed in doors of various thicknesses.

[0003] Viewed from a first aspect, the invention provides a hub assembly as claimed in claim 1. According to the invention, the pin includes a distal end aligned with a thickness of the spindle in the elongated slot.

[0004] In a further embodiment of any of the above, a tip portion is located at a distal end of the body portion on the spindle.

[0005] In a further embodiment of any of the above, the body portion includes a first cross-sectional area and the tip portion includes a second cross-sectional area. The first cross sectional area is larger than the second cross-sectional area.

[0006] In a further embodiment of any of the above, the spring recess extends to a distal end of the body portion adjacent the tip portion.

[0007] In a further embodiment of any of the above, the elongated slot includes a first pin contact surface at a proximal end of the elongated slot for contacting the pin when the spindle is biased toward an extended position by the spring.

[0008] In a further embodiment of any of the above, the elongated slot includes a second pin contact surface at a distal end of the elongated slot for contacting the pin when the spindle is in a fully retracted position.

[0009] In a further embodiment of any of the above, the body portion includes the spring recess for accepting the spring.

[0010] In a further embodiment of any of the above, the spindle recess includes a spindle recess opening at least partially surrounded by the hub body. A distal edge of the spindle recess includes a spring contact surface for contacting the spring.

[0011] In a further embodiment of any of the above, the hub body includes a slot in each of an opposing pair of sides of the spindle recess.

[0012] In a further embodiment of any of the above, the handle attachment protrusion includes an attachment pin aperture for securing a door handle attachment adapter to the handle assembly attachment protrusion with an adapter pin.

[0013] Viewed from another aspect, the invention provides a method as claimed in claim 12.

[0014] Optionally, movement of the spindle relative to the hub body is limited within the pin at least partially located in the elongated slot in the spindle and within the pin aperture in the hub body.

[0015] In a further embodiment of any of the above, the spindle includes the body portion and a tip portion located at a distal end of the body portion on the spindle. The body portion includes a first cross-sectional area. The tip portion includes a second cross-sectional area that is smaller than the first cross sectional area.

[0016] In a further embodiment of any of the above, the hub body includes a handle attachment protrusion opposite the spindle.

[0017] Certain embodiments will be described by way of example only and with reference to the accompanying drawings, in which: Figure 1 illustrates a front perspective view of an example handle assembly. Figure 2 illustrates a rear perspective view of the example handle assembly of Figure 1. Figure 3 illustrates an example hub assembly. Figure 4 illustrates a perspective exploded view of the example hub assembly of Figure 3. Figure 5 illustrates another perspective exploded view of the example hub assembly of Figure 3. Figure 6 illustrates a side exploded view of the hub assembly of Figure 3. Figure 7 illustrates a cross-sectional view of a spindle taken along line 7-7 of Figure 6. Figure 8 illustrates a top exploded view of the hub assembly of Figure 3.

[0018] Figures 1 and 2 illustrate an example door handle assembly 20. The door handle assembly 20 includes a handle 22 and an escutcheon plate 24 facing the handle 22 with the escutcheon plate 24 attached to and covering a mounting plate 26. A pair of screw posts 28 extend through the mounting plate 26 to facilitate securing the door handle assembly 20 to a door structure and / or another door handle assembly (not shown). A hub retainer 29 secures a hub assembly 30 to the mounting plate 26.

[0019] Figure 3 illustrates the example hub assembly 30. The example hub assembly 30 includes a hub body 32, a spindle 34, and a spring 36 in engagement with both the hub body 32 and the spindle 34. The hub body 32 extends along a central longitudinal axis and includes a first end portion 32A including a spindle recess 38 and a second end portion 32B including a handle attachment protrusion 40. The first end portion 32A surrounds the spindle recess 38 and includes a slot 39 in each opposing side of the spindle recess 38 (Figures 3-5 and 8). A mid-portion 32C connects the first end portion 32A and the second end portion 32B. The mid-portion 32C includes a larger diameter that the first end portion 32A and the second end portion 32B.

[0020] In the illustrated example, the spindle 34 is slidably received within the spindle recess 38 located in the first end portion 32A of the hub body 32. The spring 36 is at least partially located in the spindle recess 38 on the hub body 32 and is in engagement with the spindle 34 at a first end of the spring 36 and the hub body 32 at a second end of the spring 36. The second end of the spring 36 can be in contact with the either the first end portion 32A of the hub body 32 of the mid-portion 32C of the hub body 32. Although the spring 36 is illustrated as a coil spring, other types of springs could be used such as polymer based resilient members.

[0021] As shown in Figures 3-7, the spindle 34 includes a body portion 42 having a first pair of opposing sides 42A that each include an elongated slot 44. In the illustrated example, the elongated slot 44 extends through the body portion 42 into a spring recess 46 formed in an interior of the spindle 34. However, each pair of opposing sides of the body portion 42 could include one of the elongated slots 44 such that there are four elongated slots 44 in the body portion 42. The spring recess 46 allows the spring 36 to extend through an opening 49 to the spring recess 46 at a first end of the body portion 42 towards a second or distal end of the body portion 42. At the second or distal end of the body portion 42, the spindle 34 includes a spring contact surface 47 (Figure 7) that engages the spring 36. The spindle 34 also includes a tip portion 48 for engaging a locking portion or mortice (not shown). In the illustrated example, the body portion 42 includes a larger cross-sectional area than the tip portion 48. Additionally, the distal end of the tip portion 48 includes rounded corners to facilitate insertion into the locking portion. However, the body portion 42 could include a constant diameter to engage and drive a mortice lock.

[0022] When the spindle 34 is inserted into the spindle recess 38, a retention pin 50 is used to retain the spindle 34 within the spindle recess 38 in the hub body 32. In the illustrated example, the retention pin 50 includes a distal end that is aligned with the elongated slot 44 in the spindle 34 and the retention pin 50 is accepted within a pin aperture 52 in the hub body 32. Furthermore, the distal end of the retention pin 50 is aligned with a thickness of the body portion 42 in the elongated slot 44 to prevent the retention pin 50 from extending into the spring recess 46 in the spindle 34. This prevents the spring 36 from engaging the retention pin 50 and restricting movement of the spring 36.

[0023] An outer dimension of the body portion 42 is sized relative to the spindle recess 38 to allow for sliding movement of the spindle 34 and to prevent relative movement of the spindle 34 relative to the hub body 32 in a direction other than along the central longitudinal axis of the hub body 32.

[0024] Although the hub body 32 includes two pin apertures 52 and the spindle 34 includes at least one elongated slots 44, the spindle 34 can be retained relative to the hub body 32 with only a single retention pin 50 located in one of the pin apertures 52 and in engagement with one of the elongated slots 44. However, two retention pins 50 can be used in each of the pin apertures 52 and elongated slots if desired. However, one feature of having at least one elongated slots 44 aligned with corresponding pin apertures 52 is improved assembly or disassembly of the hub assembly 30 based on which side is more accessible when installed in the door handle assembly 20.

[0025] While the spindle 34 slides in the spindle recess 38 in the hub body 32, the retention pin 50 limits the motion of the spindle 34 longitudinally relative to the hub body 32. In particular, the retention pin 50 engages a first end 54 of the elongated slot 44 when in a fully extended position and the retention pin 50 engages a second end 56 of the elongated slot 44 when in a fully compressed or retracted position (Figure 7).

[0026] Although the different non-limiting examples are illustrated as having specific components, the examples of this disclosure are not limited to those particular combinations. It is possible to use some of the components or features from any of the non-limiting examples in combination with features or components from any of the other non-limiting examples.

[0027] It should be understood that like reference numerals identify corresponding or similar elements throughout the several drawings. It should also be understood that although a particular component arrangement is disclosed and illustrated in these exemplary embodiments, other arrangements could also benefit from the teachings of this disclosure.

[0028] The foregoing description shall be interpreted as illustrative and not in any limiting sense. A worker of ordinary skill in the art would understand that certain modifications could be made. The invention is defined by the following claims.

Claims

1. A hub assembly for a door handle comprising: a hub body (32) extending along a longitudinal axis having a first end portion (32A) including a spindle recess (38) and a second end portion (32B) including a handle attachment protrusion (40); a spindle (34) slideably received within the spindle recess in the first end of the hub body, wherein the spindle includes a body portion (42) having a first pair of opposing sides (42A) and an elongated slot (44) is located in at least one of the pair of opposing sides, wherein there is a spring recess (46) in the spindle, and wherein the spring recess includes a proximal end at an opening in a proximal end of the body portion of the spindle; a pin aperture (52) in the hub body that is at least partially aligned with the elongated slot in the spindle with a retention pin (50) located in the pin aperture and the elongated slot; and a spring (36) at least partially located within the spindle recess on the hub body and in engagement with the spindle; wherein the retention pin (50) is spaced from the spring recess (46) in the spindle, and wherein the distal end of the retention pin (50) is aligned with a thickness of the body portion (42) in the elongated slot (44) to prevent the retention pin (50) from extending into the spring recess (46) in the spindle (34).

2. The assembly of claim 1, wherein the pin (50) includes a distal end aligned with a thickness of the spindle (34) in the elongated slot (44).

3. The assembly of claim 1 or 2, further comprising a tip portion (48) located at a distal end of the body portion (42) on the spindle (34).

4. The assembly of claim 3, wherein the body portion (42) includes a first cross-sectional area and the tip portion (48) includes a second cross-sectional area and the first cross sectional area is larger than the second cross-sectional area.

5. The assembly of any preceding claim, wherein the spring recess (46) extends to a distal end of the body portion (42) adjacent the tip portion (48).

6. The assembly of any preceding claim, wherein the elongated slot (44) includes a first pin contact surface at a proximal end of the elongated slot for contacting the pin (50) when the spindle (34) is biased toward an extended position by the spring (36).

7. The assembly of claim 6, wherein the elongated slot (44) includes a second pin contact surface at a distal end of the elongated slot for contacting the pin (50) when the spindle (34) is in a fully retracted position.

8. The assembly of any preceding claim, wherein the body portion (42) includes the spring recess (46) for accepting the spring (36).

9. The assembly of claim 1, wherein the spindle recess (38) includes a spindle recess opening at least partially surrounded by the hub body (42) and a distal edge of the spindle recess includes a spring contact surface (47) for contacting the spring (36).

10. The assembly of claim 9, wherein the hub body (42) includes a slot in each of an opposing pair of sides of the spindle recess (38).

11. The assembly of claim 1, wherein the handle attachment protrusion (40) includes an attachment pin aperture for securing a door handle attachment adapter to the handle assembly attachment protrusion with an adapter pin.

12. The assembly of claim 1, wherein the elongated slot (44) extends through the body portion (42) into the spring recess (46) formed in an interior of the spindle (34).

13. A method of operating a hub assembly for a door handle as claimed in any preceding claim, the method comprising the steps of: slideably engaging the spindle (34) within the spindle recess (38) on the hub body (42) to vary a distance between a tip portion of the spindle and the hub body; and biasing the spindle towards an extended position relative to the hub body with the spring (36) located within the spindle recess (38).

14. The method of claim 13, further comprising limiting movement of the spindle (34) relative to the hub body (42) within the pin (50) at least partially located in the elongated slot (44) in the spindle and within the pin aperture (52) in the hub body.