CN109098529B - Door and window handle, door and window and method for forming cut-out part - Google Patents

Abstract

The utility model provides a handle for a door and a window, a door and a window with the handle for the door and a method for forming a cut-out part in the handle for the door and the window. The handle for the door and window comprises a pedestal, a rotatable operation part and a stop part which is arranged in the pedestal and rotates along with the operation part, wherein a plate spring is arranged on the periphery side of the stop part, a protruding part is arranged on the surface of the plate spring facing the stop part, at least two stop concave parts which are used for being clamped with the protruding parts are arranged on the periphery surface of the stop part, at least one cut-out part which is positioned between two adjacent stop concave parts is arranged on the periphery surface of the stop part, so that the deformation amount of the plate spring which is deformed after being pressed by the outer periphery surface of the part where the cut-out part is positioned on the stop part is greatly reduced, the creep deformation of the plate spring is reduced, the durability and the use strength of the plate spring are improved, the clamping force between the protruding parts and the stop concave parts on the plate spring is increased, and the operation feeling of the operation part can be accurately returned to a normal angle is ensured.

Description

Door and window handle, door and window and method for forming cut-out part

Technical Field

The utility model relates to a handle for doors and windows.

The utility model also relates to a door and window provided with the handle for the door and window.

The utility model also relates to a method for forming the cut-out part in the handle for the door and window.

Background

At present, a handle is generally configured on a door and window, so that the door and window can be conveniently opened or closed, and the handle is the most main functional component on the door and window and is also the most frequent component on the door and window, so that the handle is required to be light and durable. In order to prevent the handle from weakening the gear feeling and shaking after the handle is used for a period of time, the stop part and the stationary pedestal which synchronously rotate along with the handle are made of plastic materials, so that the abrasion loss of the contact part between the stop part and the pedestal is reduced.

Prior Art 1

The Chinese patent application No. 201220472141.X discloses a standard handle for plastic steel doors and windows, which comprises a decorative cover, a plastic spring, a handle seat (i.e. a pedestal) and a handle (i.e. an operation part), wherein a circular through hole is arranged in the middle of the handle seat, and ribs (i.e. plate springs) with bosses are respectively arranged on two sides of the circular through hole; a gear sleeve (namely a stop part) penetrates through the circular through hole, four gear grooves are uniformly formed in the edge of the gear sleeve, and the boss is clamped in the two gear grooves; an octagonal through hole is formed in the middle of the gear sleeve, an octagonal column body is arranged at the front end of the handle, and the octagonal column body penetrates through the plastic spring and the decorative cover to be riveted into the octagonal through hole; square holes are formed in the end face of the tail of the octagonal column body, and square pins connected with the transmission mechanism are riveted in the square holes; wherein, the material of handle seat is toughened and strengthened nylon 66, and the material of keeping off the position cover is polyoxymethylene. Therefore, in the process that the handle drives the gear sleeve to rotate, the friction between the gear sleeve and the handle seat is the friction between plastics, so that the mutual friction between the gear sleeve and the handle seat is reduced to a great extent, and the service life of the standard handle for the plastic-steel door and window is prolonged.

However, since the plate spring on the handle base is a plastic spring, the rebound performance and memory performance of plastic are poor, and are far inferior to those of metal. Therefore, when the grip handle is in a state other than the normal angle, for example: the handle is in angles such as 30 degrees, 45 degrees and 60 degrees, then the boss on the plate spring in the handle seat is not blocked in the gear grooves, the plate spring is deformed after being extruded by the circumferential surface positioned between two adjacent gear grooves on the gear sleeve, if the plate spring is in the state for a long time, the plate spring creep made of plastic can be caused, the plate spring can not return to the original state, so that the boss on the plate spring can not be accurately blocked in the gear grooves, and finally, the handle returns to the normal angle (0 degrees or 90 degrees), the operating force of the plate spring blocking gear sleeve is in a descending trend, the operating feel of the handle is reduced and the like.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model is to provide a handle for door and window, which reduces the deformation of the leaf spring after being pressed, so as to increase the use strength of the leaf spring.

In order to achieve the above object, the present utility model provides a handle for door and window, comprising a pedestal, a rotatable operating part, and a stop member disposed in the pedestal and rotating with the operating part, wherein the pedestal is provided with a plate spring on an outer peripheral side of the stop member, a protrusion is disposed on a surface of the plate spring facing the stop member, at least two stop recesses for engaging with the protrusion are disposed on an outer peripheral surface of the stop member, and at least one cut-out portion disposed between two adjacent stop recesses is disposed on an outer peripheral surface of the stop member. When the operation part is rotated to be in a state beyond the normal angle, the protruding part on the plate spring in the pedestal is not clamped in the stop concave part of the stop part, and the protruding part is connected with the other peripheral surfaces except the stop concave part on the stop part, namely, the part of the outer peripheral surface of the part where the cut-out part is positioned on the stop part, so that the deformation amount of the plate spring which is deformed after being pressed by the part of the outer peripheral surface where the cut-out part is positioned on the stop part can be greatly reduced, the creep of the plate spring is further reduced, the durability and the use strength of the plate spring are improved, and the clamping force between the protruding part and the stop concave part on the plate spring is increased, thereby ensuring that the operation part can accurately return to the normal angle and the operation feeling of the operation part.

Preferably, the maximum depth H1 of the cut-out portion is 30% -60% of the maximum depth H2 of the stop recess along the radial direction of the stop member, which does not affect the operation feel when the operation portion is turned while reducing the deformation amount of the leaf spring after being pressed by the cut-out portion.

Preferably, the maximum depth H1 of the cut-out is located at the middle position of the cut-out, and the depth of the cut-out gradually decreases from the middle position of the cut-out to the two ends of the cut-out and decreases to zero, so that the two ends of the cut-out and the outer peripheral surface of the non-cut-out on the stop member are in smooth transition, thereby ensuring the operation feel when the operation part is rotated, and avoiding larger and obvious change of the operation feel.

Further, in the radial direction of the stopper member, the maximum depth H1 of the cutout portion is 50% to 55% of the maximum depth H2 of the stopper recess portion.

Preferably, the outer circumferential surface of the stop member at the cut-out part is an arc surface protruding toward the leaf spring, the diameter D1 of the arc surface is larger than the outer diameter D2 of the stop member, and the stop member synchronously rotates with the operation part in the process of rotating the operation part, so that when the part of the stop member, which is contacted with the protruding part of the leaf spring, is transited from the outer circumferential surface of the stop member, which is not cut off, to the outer circumferential surface where the cut-out part is located, the operation hand of the rotation operation part can be transited smoothly without realizing a large difference, and further a smooth operation hand of the rotation operation part is provided.

Preferably, the material of pedestal and backstop part is plastics, so the friction of protruding portion on the pedestal and backstop part is the friction between plastics and the plastics, and the wearing and tearing volume of protruding portion and backstop part significantly reduces, prolongs door and window handle's life.

Further, the plate spring is of a double-layer structure and is provided with an inner spring piece positioned at the inner side, an outer spring piece positioned at the outer side and at least one reed connecting part for connecting the inner spring piece and the outer spring piece, the protruding part is arranged on the outer surface of the outer spring piece, and the use strength of the plate spring is increased through the double-layer structure of the plate spring so as to ensure that the plate spring and the stop concave part can be accurately matched for a long time.

Further, the plate springs are two and are distributed at 180-degree intervals along the periphery of the stop component, the stop concave portions are four and are distributed at 90-degree intervals along the periphery of the stop component, the cut-out portions are arranged between every two adjacent stop concave portions, so that the operating portion has four gears in the rotating process, and the operating portion can be located in four gears of 0 degree, 90 degree, 180 degree and 270 degree respectively.

The utility model also provides a door and window, and the door and window handle is arranged on the door and window.

As described above, the handle for door and window and door and window according to the present utility model have the following advantages:

the deformation amount of the plate spring which is deformed after being subjected to pressure can be greatly reduced through the cutting part when the operation part is in a state other than the normal angle, so that creep deformation of the plate spring is reduced, durability and use strength of the plate spring are improved, and clamping force between the protruding part and the stop concave part on the plate spring is increased, so that the operation part can accurately return to the normal angle, and the operation feeling of the operation part is ensured.

The utility model also provides a method for forming the cut-out part in the handle for the door and window, which comprises the following steps:

the outer circumferential surface of the part, located between two adjacent stop concave parts, of the stop part is an outer circumferential surface to be cut, a part of the outer circumferential surface to be cut is cut off along the axial direction of the stop part, and the cut-off part is formed by the cut-off part.

Further, in order to improve the machining precision of the cut-out portion, a straight line segment intersecting the outer circumferential surface to be cut may be used as a reference straight line in the process of cutting out a part of the outer circumferential surface to be cut, a part of the stop member, which is located at the outer side of the reference straight line and is opposite to the center of the outer circumferential surface to be cut, may be cut out, and both the inner circumferential surface of the cut-out portion and the outer circumferential surface of the stop member at the cut-out portion may be formed to be planar. Or, a circle intersecting with the outer circumferential surface to be cut is used as a reference circle, or a circular arc section intersecting with the outer circumferential surface to be cut is used as a reference circular arc, a part of the stop member, which is located on the outer side of the reference circle or the reference circular arc and is opposite to the circle center of the outer circumferential surface to be cut, is cut, and the inner circumferential surface of the formed cut-out portion and the outer circumferential surface of the stop member at the cut-out portion are circular arc surfaces.

Further, the diameter of the reference circle or the reference arc is larger than that of the outer circumferential surface to be cut, and a section of the arc on the reference circle or the reference arc for forming the inner circumferential surface of the cut-out part protrudes towards the leaf spring, so that a smooth operation feeling is provided when the operation part is rotated.

As described above, the method for forming a cutout portion according to the present utility model has the following advantageous effects:

the outer peripheral surface of the stop member is directly provided with the cut-out parts at the two adjacent stop concave parts by the method for forming the cut-out parts, so that the deformation of the plate spring after the plate spring is stressed when the operation part is in a state beyond the normal angle is greatly reduced, the creep of the plate spring is further reduced, the durability and the use strength of the plate spring are improved, the clamping force between the protruding parts on the plate spring and the stop concave parts is increased, and the operation part can accurately return to the normal angle and the operation sense of the operation part.

Drawings

Fig. 1 is a schematic structural view of a handle for a door or window according to the present utility model.

Fig. 2 is a schematic view of the structure of the pedestal in the present utility model.

Fig. 3 is a front view of fig. 2.

Fig. 4 and 5 are schematic structural views of the stop member according to the present utility model at different angles.

Fig. 6 is a front view of fig. 4.

Fig. 7 is a rear view of fig. 4.

Fig. 8 a-8 c are process diagrams of the formation of a cut-out in the present utility model.

Fig. 9 is a schematic view showing the engagement of the stopper member and the pedestal when the operation portion is out of normal angle in the present utility model.

Fig. 10 shows a preferred embodiment of the stop member of the present utility model.

Fig. 11a to 11c are schematic views showing a first embodiment of a method for forming a cutout portion in the present utility model.

Fig. 12 a-12 c are schematic views of a second embodiment of a method for forming a cut-out in the present utility model.

Fig. 13 a-13 c are schematic views showing a third embodiment of a method for forming a cutout portion in the present utility model.

Description of element reference numerals

10. Spring

20. Pedestal base

21. Leaf spring

211. Inner spring piece

212. Outer spring piece

213. Reed connecting part

22. Protruding part

23. Positioning rib

231. Positioning surface

30. Operation part

31. Regular polygon connecting column part

40. Stop member

41. Stop recess

42. Cut-out

43. Regular polygon hole

44. Cylinder segment

441. Outer circumferential surface to be cut

442. Contact surface of protruding part

45. Positioning part

50. Reference straight line

60. Reference circle

70. Reference circular arc

80. Cover plate

90. Square shaft

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper", "lower", "left", "right", "middle", etc. are used herein for convenience of description, but are not to be construed as limiting the scope of the utility model, and the relative changes or modifications are not to be construed as essential to the scope of the utility model.

In the following examples, the directions are defined as follows: the longitudinal direction of the pedestal 20 is defined as the up-down direction, the width direction of the pedestal 20 is defined as the left-right direction, the thickness direction of the pedestal 20 is defined as the front-back direction, the side of the pedestal 20 facing the operation portion 30 is defined as the rear side, and the side of the pedestal 20 facing away from the operation portion 30 is defined as the front side. Alternatively, in the view shown in fig. 3, the left side of the paper surface is the upward direction, the right side of the paper surface is the downward direction, the upper side of the paper surface is the right direction, the lower side of the paper surface is the left direction, the front side of the paper surface is the front direction, and the back side of the paper surface is the back direction.

The utility model provides a door and window handle which is installed on various doors and windows, as shown in figure 1, the door and window handle comprises a pedestal 20, a rotatable operation part 30, a stop part 40 which is arranged in the pedestal 20 and rotates along with the operation part 30, a cover plate 80 which is tightly pressed on the rear side surface of the pedestal 20 through a spring 10, and a square shaft 90 which extends in the front-back axial direction; the upper end of the operating part 30 is provided with a forward protruding regular polygon connecting column part 31, the stop member 40 is provided with a regular polygon hole 43 matched with the regular polygon connecting column part 31 of the operating part 30, the regular polygon hole 43 axially penetrates the stop member 40 from front to back, and the regular polygon connecting column part 31 of the operating part 30 sequentially penetrates through the spring 10 and the cover plate 80 and then is riveted into the regular polygon hole 43 of the stop member 40; meanwhile, a square hole is formed in the regular polygon connecting column part 31 of the operation part 30, the square hole penetrates through the regular polygon connecting column part 31 forwards, the rear end of the square shaft 90 is riveted into the square hole of the operation part 30, and the front end of the square shaft 90 is used for connecting a transmission mechanism. As shown in fig. 2 and 3, the pedestal 20 is provided with a leaf spring 21 on the outer peripheral side of the stopper member 40, and the surface of the leaf spring 21 facing the stopper member 40 is provided with a protrusion 22; as shown in fig. 4 to 7, at least two stop recesses 41 for engaging with the protrusions 22 are provided on the outer peripheral surface of the stop member 40, and the outer peripheral surface of the stop member 40 is a peripheral surface.

When the door and window handle is used for opening or closing the door and window, a user applies force to rotate the operation part 30, and the operation part 30 drives the stop part 40 and the square shaft 90 to synchronously rotate through the mutual matching of the regular polygon connecting column part 31 in the operation part 30 and the regular polygon hole 43 in the stop part 40 and the mutual matching of the square hole in the operation part 30 and the square shaft 90, and the square shaft 90 drives the transmission mechanism to act, so that the door and window can be opened or closed. Specifically, during the rotation of the operating portion 30, the outer peripheral surface of the stopper member 40 rotates relative to the protrusion 22 on the plate spring 21, causing the protrusion 22 on the plate spring 21 to be caught in the stopper recess 41 on the outer periphery of the stopper member 40 or the protrusion 22 on the plate spring 21 to be released from the stopper recess 41 on the outer periphery of the stopper member 40, thereby forming the rotation stop of the operating portion 30 of the door and window handle. Preferably, the material of the stand 20 and the stop member 40 is plastic, such as: the pedestal 20 is made of toughened and reinforced nylon 66, and the stopping component 40 is made of polyoxymethylene; therefore, during the process of rotating the operation part 30, the friction between the protruding part 22 arranged on the surface of the plate spring 21 on the pedestal 20 and the outer peripheral surface of the stop member 40 is the friction between plastics, so that the abrasion amount of the protruding part 22 and the stop member 40 is greatly reduced, and the service life of the door and window handle is further prolonged.

In addition, as shown in fig. 2 and 3, the leaf springs 21 are arranged in a mirror image manner, so that the two leaf springs 21 are distributed at 180 ° intervals along the outer circumference of the stopper member 40, and the protrusion 22 on each leaf spring 21 is located at an intermediate position of the respective leaf spring 21 in the left-right direction, so that the protrusions 22 on the two leaf springs 21 are also arranged in a mirror image manner. As shown in fig. 4 to 7, the stop recesses 41 are four and are spaced at 90 ° intervals along the outer circumference of the stop member 40, so that the operating portion 30 has four rotational steps during rotation: the operating portion 30 may be located at four rotational positions of 0 °, 90 °, 180 °, and 270 ° with respect to the longitudinal direction of the pedestal 20 in the counterclockwise or clockwise direction, so that 0 °, 90 °, 180 °, and 270 ° are also normal angles at which the operating portion 30 is rotated. When the operating portion 30 is rotated at four normal angles of 0 °, 90 °, 180 °, and 270 °, the two protrusions 22 on the pedestal 20 are respectively located in the two vertically opposed stopper recesses 41 on the outer periphery of the stopper member 40, and the leaf spring 21 in the pedestal 20 is in an extended state without deformation amount. When the operating portion 30 is rotated at an angle other than four normal angles of 0 °, 90 °, 180 °, and 270 °, the two protrusions 22 on the pedestal 20 come out of the stopper recess 41 and come into contact with the remaining outer circumferential surface of the outer circumference of the stopper member 40 excluding the stopper recess 41, the leaf spring 21 in the pedestal 20 is in a compressed state with a certain compression deformation amount.

Since the pedestal 20 is made of plastic, and the plastic has a lower rebound performance and a lower memory function than those of metal, the plastic is subject to creep deformation after being compressed for a long time, so that the plastic cannot return to an original state, and in order to prevent the creep deformation of the plate spring 21 made of plastic in the present utility model, as shown in fig. 8, at least one cut-out portion 42 between two adjacent stop concave portions 41 is provided on the outer circumferential surface of the stop member 40; preferably, there is one said cut-out 42 between each adjacent two of the stop recesses 41, so that there are four cut-outs 42. Specifically, as shown in fig. 8a, the stopper member 40 has a cylindrical section 44 having an outer circumferential surface with a constant diameter, and the stopper member 41 has a groove extending axially along the outer circumferential surface on the outer circumferential surface of the cylindrical section 44, so that the stopper member 40 in fig. 8a has no cut-out portion 42 and is not subjected to a cutting process. In order to reduce the compression deformation amount of the plate spring 21 generated by pressing the remaining outer circumferential surface of the cylindrical segment 44 of the stopper member 40 except for the stopper concave portions 41 and compressing the plate spring 21, as shown in fig. 8b, a part of the outer circumferential surface of the cylindrical segment 44 located between the adjacent two stopper concave portions 41 is cut off, for convenience of description, the part of the outer circumferential surface of the cylindrical segment 44 located between the adjacent two stopper concave portions 41 is defined as an outer circumferential surface to be cut 441, the part of the outer circumferential surface to be cut 441 is cut off in the axial direction of the stopper member 40, then a new outer circumferential surface of the cylindrical segment 44 is formed and defined as a protrusion contact surface 442, and then a region between the outer circumferential surface to be cut 441 and the protrusion contact surface 442 of the cylindrical segment 44, which is provided when the cylindrical segment 44 is not cut off, is a cut off part of the cylindrical segment 44, as shown in fig. 8b and 8c, and the structure of the stopper member 40 after the cutting off process is performed in fig. 8b is schematically shown.

When the operating portion 30 is rotated at an angle other than four normal angles of 0 °, 90 °, 180 ° and 270 °, the protruding portion 22 on the plate spring 21 is acted by the protruding portion contact surface 442 on the stopper member 40, so that the plate spring 21 is compressed, but due to the presence of the cutout portion 42, the protruding portion contact surface 442 on the stopper member 40 is far away from the protruding portion 22 on the plate spring 21 than the outer circumferential surface 441 to be cut, as shown in fig. 9, the deformation amount of the plate spring 21 due to compression deformation can be greatly reduced, creep deformation of the plate spring 21 can be further reduced, durability and use strength of the plate spring 21 can be increased, and the clamping force between the protruding portion 22 and the stopper recess 41 on the plate spring 21 can be ensured, so that the stopper effect of the plate spring 21 on the stopper member 40 can be ensured, the operating portion 30 can be accurately returned to the normal angle, and the operation feel of the operating portion 30.

Further, as shown in fig. 2 and 3, the leaf spring 21 has a double-layer structure, and has an inner spring piece 211 located on the inner side, an outer spring piece 212 located on the outer side, and at least one spring piece connecting portion 213 connecting the inner spring piece 211 and the outer spring piece 212, wherein the outer spring piece 212 directly faces the stopper member 40, the inner spring piece 211 is located on the upper side or the lower side of the outer spring piece 212 facing away from the stopper member 40, and the spring piece connecting portion 213 has only one and only one spring piece connecting portion 213 located at the middle position of each leaf spring 21 in the left-right direction, so that the spring piece connecting portion 213 and the protruding portion 22 on each leaf spring 21 are opposite to each other in the up-down direction, and the protruding portion 22 is provided on the outer surface of the outer spring piece 212 facing the stopper member 40, so that the use strength of the leaf spring 21 is increased by the double-layer structure of the leaf spring 21, so that the leaf spring 21 and the stopper concave portion 41 can be accurately matched for a long time, and the leaf spring 21 has a good stopper effect on the operating portion 30 after the door and window handle is used for a long time.

As shown in fig. 4 to 7, the stopper member 40 is provided with a flat disc-shaped positioning portion 45 on the front end side of the cylindrical section 44 for processing the stopper recess 41, the outer diameter of the positioning portion 45 is larger than the diameter of the cylindrical section 44, and the front end of the stopper recess 41 does not extend to the positioning portion 45; as shown in fig. 2 and 3, the pedestal 20 is provided with four positioning ribs 23 on the outer peripheral side of the stopper member 40, the four positioning ribs 23 being respectively located at the left and right ends of the two leaf springs 21, each positioning rib 23 having a positioning surface 231 facing the stopper member 40; as shown in fig. 9, the positioning surface 231 of the pedestal 20 is in clearance fit with the positioning portion 45 of the stopper member 40, and the mounting accuracy between the stopper member 40 and the pedestal 20 is improved.

The present utility model also provides a method for forming a cut-out portion for machining the cut-out portion 42 formed on the outer peripheral side of the stopper member 40 in the handle for door and window. The method for forming the cut-out part in the handle for the door and window comprises the following steps: the outer circumferential surface of the portion of the stopper member 40 located between the adjacent two stopper recesses 41 is defined as an outer circumferential surface 441 to be cut, so when there are four stopper recesses 41, there are four sections of the outer circumferential surface 441 to be cut correspondingly; the outer circumferential surface 441 to be cut of each segment is cut out in a part in the axial direction of the stopper member 40 such that the outer circumferential surface of the stopper member 40 located between the adjacent two stopper recesses 41 and at the junction with the projection 22 is as far away from the projection 22 of the plate spring 21 as possible, and the cut-out part of the stopper member 40 forms the cut-out portion 42. The cutout 42 greatly reduces the deformation amount of the leaf spring 21 due to compression deformation when the operation portion 30 is at an angle other than the normal angle, thereby reducing creep of the leaf spring 21 and increasing durability and use strength of the leaf spring 21. In order to improve the machining accuracy of the cut-out 42 on each section of the outer circumferential surface 441 to be cut and the convenience of machining the cut-out 42, three preferred embodiments of the cut-out forming method are provided below:

first embodiment of the cutout portion forming method:

fig. 11a is a schematic diagram of a first embodiment of the cutout forming method, fig. 11b is a schematic diagram of a structure of the first embodiment of the cutout forming method, and fig. 11c is a rear view of the stopper member 40 processed after the cutting-out process of the first embodiment of the cutout forming method. As shown in fig. 11a to 11c, in the process of cutting out a part of the outer circumferential surface 441 to be cut, a straight line segment intersecting the outer circumferential surface 441 to be cut of the cylindrical segment 44 in the stopper member 40 is used as a reference straight line 50, and a part of the outer circumferential surface 441 to be cut on the cylindrical segment 44 in the stopper member 40 located outside the reference straight line 50 away from the center of the outer circumferential surface 441 to be cut is cut out. At this time, the outer peripheral surface of the formed cutout portion 42 is a section of the outer peripheral surface to be cut 441 located between two intersecting points of the reference straight line 50 and the outer peripheral surface to be cut 441, is an arc surface, and the inner peripheral surface of the formed cutout portion 42 and the outer peripheral surface of the stopper member 40 at the cutout portion 42 are both planes extending in the axial direction of the cylindrical section 44 of the reference straight line 50 located between two intersecting points of the reference straight line 50 and the outer peripheral surface to be cut 441.

Second embodiment of the cutout forming method:

fig. 12a is a schematic view of a second embodiment of the method for forming a cut-out portion, fig. 12b is a schematic view of a structure of the second embodiment of the method for forming a cut-out portion, and fig. 12c is a rear view of a stopper member 40 processed after a cutting process of the second embodiment of the method for forming a cut-out portion. As shown in fig. 12a to 12c, an arc section intersecting with the outer circumferential surface 441 to be cut of the cylindrical section 44 in the stopper member 40 is used as a reference arc 70, and a portion of the outer circumferential surface 441 to be cut on the cylindrical section 44 in the stopper member 40 located outside the reference arc 70 away from the center of the outer circumferential surface 441 to be cut is cut, and the reference arc 70 may be curved inward toward the center of the outer circumferential surface 441 to be cut or curved outward toward the center of the outer circumferential surface 441 to be cut as shown in fig. 12 b. At this time, the outer peripheral surface of the formed cutout portion 42 is a section of the outer peripheral surface to be cut 441 located between two intersecting points of the reference circular arc 70 and the outer peripheral surface to be cut 441, and is a circular arc surface, and the inner peripheral surface of the formed cutout portion 42 and the outer peripheral surface of the stopper member 40 at the cutout portion 42 are both circular arc surfaces extending in the axial direction of the cylindrical section 44 of the reference circular arc 70 located between two intersecting points of the reference circular arc 70 and the outer peripheral surface to be cut 441.

Third embodiment of the cutout forming method:

fig. 13a is a schematic view of a third embodiment of the method for forming a cut-out portion, fig. 13b is a schematic view of a structure of the third embodiment of the method for forming a cut-out portion, and fig. 13c is a rear view of a stopper member 40 processed after a cutting process of the third embodiment of the method for forming a cut-out portion. As shown in fig. 13a to 13c, a circle intersecting the outer circumferential surface 441 to be cut of the cylindrical section 44 in the stopper member 40 is used as the reference circle 60, and a portion of the outer circumferential surface 441 to be cut on the cylindrical section 44 in the stopper member 40 located on the outside of the reference circle 60 facing away from the center of the outer circumferential surface 441 to be cut is cut, and the reference circle 60 may be curved inward toward the center of the outer circumferential surface 441 to be cut (as shown in fig. 13 b) or may be curved outward toward the center of the outer circumferential surface 441 facing away from the center of the outer circumferential surface 441 to be cut. At this time, the outer circumferential surface of the formed cutout portion 42 is a section of the outer circumferential surface to be cut 441 located between two intersecting points of the reference circle 60 and the outer circumferential surface to be cut 441, and is an arc surface, and the inner circumferential surface of the formed cutout portion 42 and the outer circumferential surface of the stopper member 40 at the cutout portion 42 are both arc surfaces extending in the axial direction of the cylindrical section 44 of the reference circle 60 located between two intersecting points of the reference circle 60 and the outer circumferential surface to be cut 441.

In the above three embodiments of the method for forming the cut-out portion, the outer circumferential surface of the stop member 40 at the cut-out portion 42 is the protrusion contact surface 442.

Preferably, in the second and third embodiments of the method for forming a cut-out portion, the reference circular arc 70 or the reference circular arc 60 is curved inward toward the center of the outer circumferential surface 441 to be cut, that is, a section of the circular arc on the reference circular arc 60 or the reference circular arc 70 for forming the inner circumferential surface of the cut-out portion 42 protruding toward the leaf spring 21, and the outer circumferential surface or the protruding portion contact surface 442 of the stopper member 40 at the cut-out portion 42 is a section of the circular arc protruding toward the leaf spring 21, and at this time, the diameter of the reference circular arc 60 or the reference circular arc 70 is larger than the diameter of the outer circumferential surface 441 to be cut, and the reference circular arc 60 is different from the outer circumferential surface 441 to be cut, so that the diameter D1 of the circular arc surface (i.e., the protruding portion contact surface 442) of the stopper member 40 at the cut-out portion 42 is larger than the outer diameter D2 of the cylindrical section 44 of the stopper member 40, which can provide a smooth operation feeling when the operator 30 rotates. Specifically, since the cutout portions 42 are formed by cutting out a part of the outer circumferential surface 441 of each segment to be cut, the maximum depth H1 of the cutout portions 42 is located at the intermediate position of the cutout portions 42 in the radial direction of the stopper member 40, and the depth of the cutout portions 42 gradually decreases from the intermediate position of the cutout portions 42 toward both ends of the cutout portions 42 and decreases to zero. The outer diameter D2 of the cylindrical section 44 is set to 23.7mm, the outer diameter of each section of the outer circumferential surface 441 to be cut is also set to 23.7mm, the maximum depth H1 of the cut-out portion 42 to be formed on each section of the outer circumferential surface 441 to be cut is set to 0.55mm, and the minimum distance of the cut-out portion 42 from the center of each section of the outer circumferential surface 441 to be cut (i.e., the center axis of the stopper member 40) is 11.3mm. After the cut-out 42 is formed by the first embodiment of the cut-out forming method, as shown in fig. 11b, the distance between the two intersecting points of the reference straight line 50 and the outer circumferential surface 441 to be cut on the stopper member 40 (i.e., the distance between the two end points of the cut-out 42) is 7.14mm; after the cut-out 42 is formed by the second embodiment or the third embodiment of the cut-out forming method, and the reference arc 70 or the reference circle 60 is curved outwards away from the center of the outer circumferential surface 441 to be cut, as shown in fig. 12b, the distance between two intersecting points of the reference arc 70 or the reference circle 60 and the outer circumferential surface 441 to be cut (i.e., the distance between two end points of the cut-out 42) on the stop member 40 is 6.62mm; when the cut-out 42 is formed by the second embodiment or the third embodiment of the cut-out forming method, and the reference circular arc 70 or the reference circle 60 is curved inward facing the center of the outer circumferential surface 441 to be cut, as shown in fig. 13b, the distance between two intersecting points of the reference circular arc 70 or the reference circle 60 and the outer circumferential surface 441 to be cut (i.e., the distance between two end points of the cut-out 42) on the stopper member 40 is 11.5mm. From this, it can be seen that: when the cut-out portion 42 is formed, if the reference circular arc 70 or the reference circular arc 60 is curved inward toward the center of the outer circumferential surface 441 to be cut, the cut-out portion 42 is longest along the circumferential direction of the stopper member 40, and the directions of the both ends of the cut-out portion 42 closest to the stopper concave portion 41 and the depth of the cut-out portion 42 gradually decrease from the middle to the both ends, so that the operation feeling of the rotation operation portion 30 is smoothly transited without a large and remarkable change in the operation feeling when the portion of the stopper member 40 in contact with the projection 22 of the leaf spring 21 transits between the outer circumferential surface of the stopper member 40 and the outer circumferential surface where the cut-out portion 42 is located during the rotation operation portion 30, thereby providing a smooth operation feeling when the rotation operation portion 30 is rotated.

In the stopper member 40 shown in fig. 10, the radius of the reference circular arc 70 or the reference circle 60 is preferably 18mm, so that the diameter D1 of the circular arc surface of the stopper member 40 at the cut-out 42 is preferably 36.16mm; the outer diameter D2 of the cylindrical section 44 is 23.7mm; the maximum depth H1 of the cut-out 42 is 0.55mm; the minimum distance of the cut-out 42 from the center of each section of the outer circumferential surface 441 to be cut is 11.3mm, and the distance between the two end points of the cut-out 42 is 11.5mm. Further, in the radial direction of the stopper member 40, the maximum depth H1 of the cutout portion 42 is 30% to 60%, preferably 50% to 55%, of the maximum depth H2 of the stopper recess 41, and the deformation amount of the leaf spring 21 after being pressed is reduced by the cutout portion 42, and the operation feeling at the time of turning the operation portion 30 is not affected.

The utility model also provides a door and window, and the door and window handle is arranged on the door and window.

In summary, the present utility model effectively overcomes the disadvantages of the prior art and has high industrial utility value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (13)

1. The utility model provides a handle for door and window, includes pedestal (20), rotatable operating portion (30) and settles in pedestal (20) and rotate with operating portion (30) backstop part (40), pedestal (20) are equipped with leaf spring (21) in the periphery side of backstop part (40), be equipped with protruding portion (22) on the surface that leaf spring (21) faced backstop part (40), be equipped with at least two on the periphery of backstop part (40) be used for with backstop concave part (41) of protruding portion (22) looks block, its characterized in that: the outer circumferential surface of the stop member (40) is provided with at least one cut-out (42) located between two adjacent stop recesses (41).

2. The handle for door and window according to claim 1, wherein: the maximum depth H1 of the cut-out part (42) is 30-60% of the maximum depth H2 of the stop concave part (41) along the radial direction of the stop part (40).

3. The handle for door and window according to claim 2, wherein: the maximum depth H1 of the cut-out part (42) is positioned at the middle position of the cut-out part (42), and the depth of the cut-out part (42) gradually decreases from the middle position of the cut-out part (42) to the two ends of the cut-out part (42).

4. A handle for doors and windows according to any one of claims 1 to 3, characterised in that: the maximum depth H1 of the cut-out part (42) is 50-55% of the maximum depth H2 of the stop concave part (41) along the radial direction of the stop part (40).

5. A handle for doors and windows according to any one of claims 1 to 3, characterised in that: the outer circumferential surface of the stop member (40) at the cut-out part (42) is an arc surface protruding toward the plate spring (21), and the diameter D1 of the arc surface is larger than the outer diameter D2 of the stop member (40).

6. The handle for door and window according to claim 1, wherein: the material of the pedestal (20) and the stop part (40) is plastic.

7. The handle for door and window according to claim 1, wherein: the leaf spring (21) is of a double-layer structure and is provided with an inner spring piece (211) positioned on the inner side, an outer spring piece (212) positioned on the outer side and at least one reed connecting part (213) for connecting the inner spring piece (211) and the outer spring piece (212), and the protruding part (22) is arranged on the outer surface of the outer spring piece (212).

8. The handle for door and window according to claim 1, wherein: the leaf springs (21) are two, are distributed at 180-degree intervals along the periphery of the stop part (40), the stop concave parts (41) are four, are distributed at 90-degree intervals along the periphery of the stop part (40), and the cut-out parts (42) are arranged between every two adjacent stop concave parts (41).

9. A door and window, characterized in that: the door and window handle according to any one of claims 1 to 8 is mounted on the door and window.

10. A method of forming a cut-out in a door or window handle according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:

the outer circumferential surface of the part of the stop member (40) located between two adjacent stop concave parts (41) is an outer circumferential surface (441) to be cut, a part of the outer circumferential surface (441) to be cut is cut along the axial direction of the stop member (40), and the cut part forms the cut part (42).

11. The method of forming a cutout portion according to claim 10, characterized in that: a straight line section intersecting with the outer circumferential surface (441) to be cut is used as a reference straight line (50), a part of the stop member (40) where the outer circumferential surface (441) to be cut is located outside the reference straight line (50) and is opposite to the circle center of the outer circumferential surface (441) to be cut is cut, and the inner circumferential surface of the formed cut-out portion (42) and the outer circumferential surface of the stop member (40) at the cut-out portion (42) are both plane surfaces.

12. The method of forming a cutout portion according to claim 10, characterized in that: a circle intersecting with the outer circumferential surface (441) to be cut is used as a reference circle (60), or a circular arc section intersecting with the outer circumferential surface (441) to be cut is used as a reference circular arc (70), a part of the stop member (40) where the outer circumferential surface (441) to be cut is located outside the reference circle (60) or the reference circular arc (70) away from the center of the outer circumferential surface (441) to be cut is cut, and the inner circumferential surface of the cut-out portion (42) and the outer circumferential surface of the stop member (40) at the cut-out portion (42) are both circular arc surfaces.

13. The method of forming a cutout portion according to claim 12, characterized in that: the diameter of the reference circle (60) or the reference circular arc (70) is larger than that of the outer circumferential surface (441) to be cut, and a section of circular arc on the reference circle (60) or the reference circular arc (70) for forming the inner circumferential surface of the cut-out portion (42) protrudes toward the leaf spring (21).