WO2018068337A1

WO2018068337A1 - Rotary knob structure

Info

Publication number: WO2018068337A1
Application number: PCT/CN2016/102349
Authority: WO
Inventors: 王全搌; 吴玉中; 李逸勇
Original assignee: 海能达通信股份有限公司
Priority date: 2016-10-11
Filing date: 2016-10-18
Publication date: 2018-04-19
Also published as: CN106292835A; CN106292835B

Abstract

Disclosed is a rotary knob structure (10). The rotary knob structure (10) comprises a rotary knob cap (11), a hoop (12) and a spindle (13). The rotary knob cap (11) is provided with a containing groove (111). A limiting groove (112) is provided at the bottom of the containing groove (111). A side wall of the limiting groove (112) is provided with a notch (113). The hoop (12) is sheathed on an outer side of the limiting groove (112). The hoop (12) comprises an annular body (121) and an elastic arm (122). The elastic arm (122) is provided facing the interior of the body (121). The elastic arm (122) is housed in the notch (113). The elastic arm (122) is a magnetically conductive body. An end of the spindle (13) is housed in the limiting groove (112). A side wall of the spindle (13) is provided with a clamping groove (132). At least one free end of the elastic arm (122) passes through the notch (113) and enters the clamping groove (132). The elastic arm (122) undergoes elastic deformation under the action of a magnetic field, so that the elastic arm (122) passes in and out of the clamping groove (132), thereby enabling the hoop (12) to be connected to the spindle (13) in a detachable manner.The spindle (13) is connected to the rotary knob cap (11) via the elastic arm (122), so that the elastic arm (122) clamps the spindle (13) tightly and the spindle (13) cannot move outwards, whereby the rotary knob cap (11) and the spindle (13) are connected stably. The rotary knob structure (10) effectively improves the insertion and extraction effects of the spindle (13), prolonging the service life of the rotary knob structure (10).

Description

Technical field

[0001] The present invention relates to an accessory for an electronic device, and more particularly to a knob structure.

Background technique

[0002] A knob is a manual control element that is coupled to a gate member to control the degree of opening or closing of the jaw. The edge is generally engraved with one or a series of labels, mostly circular convex structures. A disc or the like allows rotation control of the knob. At present, the conventional knob mostly includes a knob seat, a knob cap, and a connecting shaft, and the knob cover is connected to the knob seat through the connecting shaft. Usually, the connecting shaft is provided with an external thread, and the knob cap is screwed to the connecting shaft. When a length of time is used, a slider is easily formed between the knob cap and the connecting shaft, so that the knob cap is disengaged from the connecting shaft, which affects the use of the knob.

technical problem

[0003] The technical problem to be solved by the present invention is to provide a knob structure capable of ensuring a stable connection between a knob cap and a rotating shaft.

Problem solution

Technical solution

[0004] In order to solve the above technical problem, the present invention provides a knob structure, including:

[0005] The knob cap is provided with a receiving groove, the bottom of the receiving groove is provided with a limiting slot, and the side wall of the limiting slot is provided with a notch;

a clamp is disposed on an outer side of the limiting slot, the clamp includes an annular body and an elastic arm, and the elastic arm is disposed at an end of the body and is bent toward an inner portion of the body Folding, the elastic arm is received in the notch, and the elastic arm is a magnetizer;

[0007] a rotating shaft, one end of which is received in the limiting slot, the side wall of the rotating shaft is provided with a card slot, and at least one free end of the elastic arm passes through the notch and enters the card slot;

[0008] wherein the elastic arm elastically deforms under the action of a magnetic field to allow the elastic arm to enter and exit the card slot, so that the clip is detachably connected to the rotating shaft.

[0009] More preferably, a plurality of card slots are disposed around the limiting slot, and the plurality of card slots surround the limiting slot. The side is disposed, and the body of the clamp is disposed in the card position.

[0010] More preferably, the card slot is provided with a slit, and the body of the clip is engaged in the slit.

[0011] More preferably, the limiting slot is provided with a cornice.

[0012] More preferably, the side wall of the limiting slot is provided with two of the notches, and the elastic arms are two, and the two elastic arms are respectively received in the notch.

[0013] More preferably, the elastic arm includes a long arm and a short arm, the long arm is located at one end of the body, and the long arm passes through one of the notches and enters the card slot, the short The arm is located at the other end of the body and is received within the other of the notches.

[0014] More preferably, an end of the body near the long arm is provided with an increasing portion, and the height of the increasing portion is greater than a height of the body.

[0015] More preferably, the apex angle of the free end of the elastic arm is rounded.

[0016] Preferably, one end of the rotating shaft received in the limiting slot is a connecting end, and the connecting end is provided with a cutting plane along an axial direction thereof, and the shape of the limiting slot is opposite to the shape of the connecting end match.

[0017] More preferably, the card slot is disposed on the cutting plane.

[0018] More preferably, the length of the cut surface is equal to the height of the limit groove.

[0019] More preferably, the end surface of the connecting end is provided with a chamfer, and the chamfer is disposed near one side of the cutting surface. More preferably,

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] The knob structure of the present invention firstly penetrates into the notch of the knob cap through the elastic arm portion of the clamp to realize the snap connection of the clamp and the knob cap. Then, one end of the rotating shaft is inserted into the limiting slot, and the elastic arm of the pressing clamp is outwardly deformed along the guiding action of the chamfer on the rotating shaft. When the rotating shaft is assembled in position, the elastic arm is just aligned with the slot on the rotating shaft, and the elastic arm that has lost the squeeze recovers the shape and is inserted into the rotating shaft slot. When the shaft is pulled out, the shaft has a force on the elastic arm through the slot in the axial direction. Under the action of the force, the clamp is tightly clamped to the outer side wall of the limiting slot, and the elastic arm firmly catches the rotating shaft, and the rotating shaft cannot move outward, so that the knob cap and the rotating shaft are stably connected. The above knob structure effectively improves the insertion and removal effect of the rotating shaft and prolongs the service life of the knob structure.

[0022] When the knob structure requires disassembly, a magnet needs to be placed on one side of the knob structure. Under the action of the magnetic field of the magnet, the elastic arm of the clamp receives an outward force under the action of the magnet, and the elastic arm is deformed from the card. The groove is disengaged, that is, the clamp is disengaged from the rotating shaft, so that the rotating shaft can be easily pulled out, and the knob structure is removed.

[0023] Therefore, the knob structure is coupled to the rotating shaft and the rotating cap by the clamp, thereby realizing the installation of the knob structure, the structure is simple, and the cost is low. Moreover, in the above knob structure, the rotating shaft can be stably accommodated in the limiting slot of the knob structure, preventing loosening between the rotating shaft and the knob cap, and affecting the use of the knob structure.

[0024] When the knob structure needs to be disassembled, the magnet is used for disassembly, the structure is novel and reliable, and the professionalism is strong.

[0025] Moreover, the detachable connection between the rotating shaft and the knob cap can be realized. When the rotating shaft or the knob cap is worn and damaged through the long turn, the repair can be performed by replacing the rotating shaft or the knob cap, which is convenient for maintenance and reduces the beneficial effects of the invention.

Brief description of the drawing

DRAWINGS

1 is a schematic structural view of a knob structure of the present embodiment;

2 is a schematic view showing the assembly of a knob cap and a clamp of the knob structure shown in FIG. 1;

3 is an exploded view of the knob structure shown in FIG. 1;

4 is a schematic view showing the assembly of the clamp and the rotating shaft of the knob structure shown in FIG. 1;

5 is a schematic view showing a rotating shaft in which the knob structure shown in FIG. 1 is removed by a magnet.

[0031] The reference numerals are as follows: 10, the knob structure; 11, the knob cap; 111, the receiving groove; 112, the limit slot; 113, the notch; 114, the card position; 115, the mouth; 116, the straight portion; 12, clamp; 121, body; 122, elastic arm; 124, long arm; 125, short arm; 126, enlarged part; 13, rotating shaft; 131, connecting end; 132, card slot; 133, cut surface; Chamfer; 20, magnet.

Embodiments of the invention

The above described objects, features, and advantages of the present invention will be more apparent from the aspects of the invention. In the following description, a lot of specific details are explained to facilitate The invention is fully understood. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention, and thus the present invention is not limited by the specific implementations disclosed below.

[0033] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or the element can be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or. The terms "vertical", "horizontal", "left", "right", and the like, as used herein, are for illustrative purposes only and are not meant to be the only embodiment.

[0034] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

[0035] Referring to Figure 1, the knob structure 10 of the present embodiment. The knob structure 10 includes a knob cap 11, a clamp 12, and a shaft 1 3.

[0036] Referring to FIG. 2, the knob cap 11 is provided with a receiving groove 111. The housing groove 111 has a knob cap 11 in a cap-like configuration. A limiting slot 112 is defined in the bottom of the receiving slot 111. The height of the limiting slot 112 is smaller than the height of the receiving slot 111 and is received at the bottom of the receiving slot 111. The side wall of the limiting groove 112 is provided with a notch 113.

Referring to FIG. 3, the clamp 12 is sleeved on the outer side of the limiting slot 112. The clamp 12 includes an annular body 121 and an elastic arm 122. The body 121 is bent from a long and narrow plate-like structure, and the body 121 includes two ends. The elastic arm 122 is disposed at an end of the body 121 and is bent toward the inside of the body 121. The resilient arm 122 is received within the opening 113. Specifically, in the embodiment, two recesses 113 are defined in the sidewall of the limiting slot 112. The elastic arms 12 2 are two, and the two elastic arms are respectively received in the notches 113. The two elastic arms 122 are respectively received in a notch 113, so that the two ends of the clamp 12 are stably connected with the limiting groove 112, and the connection strength between the clamp 12 and the knob cap 11 is improved. It can be understood that the elastic arm 122 can also be one. The one end of the body 121 is provided with a resilient arm 122. The connection of the clamp 12 to the knob cap 11 can also be achieved by a resilient arm 122.

[0038] The elastic arm 122 is bent by a plate-shaped magnet, and the notch 113 is elongated, so that the elastic arm 122 is completely It is housed in the gap 113. It can be understood that the elastic arm 122 can also be made of other shapes of materials, and the shape of the notch 113 is adapted to the cross section of the elastic arm 122. The resilient arm 122 is a magnetizer. The magnetic resistance of the magnetizer is small, and the magnetic flux is easily passed.

[0039] It can be understood that, in practical applications, the material of the elastic arm 122 is other well-known magnetic materials in the prior art, such as iron, nickel, etc., which are not exhaustive. Moreover, the body 121 of the clip 12 and the elastic arm 122 may be a unitary structure, and the body 121 and the elastic arm 122 may also be combined. The material of the body 121 is not limited, as long as the elastic arm 122 is a magnet.

[0040] The elastic arm 122 is elastically deformed by the magnetic force under the action of the external magnetic field, and is withdrawn from the card slot to detachably connect the clip 12 with the rotating shaft 13. When the magnetic field is removed, the elastic arm 122 resumes elastic deformation.

[0041] Referring to FIG. 3, one end of the rotating shaft 13 is a connecting end 131, and the connecting end 131 is received in the limiting slot 112. The side wall of the rotating shaft 13 is provided with a card slot 132, and the free end of at least one resilient arm 122 passes through the notch 113 and enters the slot 132. That is, the clamp 12, the knob cap 11 and the rotating shaft 13 are engaged by the elastic arm 122. When the shaft 13 is pulled outward, the shaft 13 has a force acting on the elastic arm 122 through the slot 132 in the axial direction. Under the action of the force, the clamp 12 is tightly clamped to the outer side wall of the limiting slot 112, and the elastic arm 122 firmly catches the rotating shaft 13, and the rotating shaft 13 cannot move outward, so that the knob cap 11 and the rotating shaft 13 are stabilized. connection. The above knob structure 10 effectively improves the insertion and removal effect of the rotating shaft 13, and prolongs the service life of the knob structure 10.

[0042] In the knob structure 10 of the present invention, the knob 12 is engaged with the rotating shaft 13 and the knob cap 11 to realize the installation of the knob structure 10, and the structure is simple and the cost is low. Moreover, in the knob structure 10, the rotating shaft 13 can be stably received in the limiting slot 112 of the knob structure 10, and the loosening between the rotating shaft 13 and the knob cap 11 is prevented, which affects the use of the knob structure 10.

[0043] Referring to FIG. 5, when the knob structure 10 needs to be disassembled, the elastic arm 122 of the clamp 12 is subjected to an outward force by the magnet 20, and the elastic arm 122 is deformed and disengaged from the slot 132. That is, the clip 12 is disengaged from the rotary shaft 13, so that the rotary shaft 13 can be easily pulled out to complete the disassembly of the knob structure 10. The above-mentioned knob structure 10 is disassembled by using the magnet 20, and the structure is novel and reliable, and the professionalism is strong.

[0044] Moreover, the detachable connection between the rotating shaft 13 and the knob cap 11 can be realized. When the rotating shaft 13 or the knob cap 11 is damaged by the use of the long shaft, the shaft 13 or the knob cap 11 can be replaced for maintenance, which is convenient for maintenance and reduces. cost. [0045] Specifically, in the embodiment, the outer side wall of the knob cap 11 is provided with a ridge (not shown) to facilitate the gripping operation. Moreover, the knob cap 11 is an integral injection molding structure, and the structure of the knob cap 11 is ensured to be stable. The knob cap 1 1 is made of a plastic material, or other shapeable material, such as natural rubber, resin, etc., not enumerated here.

Referring to FIG. 2, a plurality of latching positions 114 are disposed around the limiting slot 112. A plurality of latching slots 114 are disposed around the outer side of the limiting slot 112. The body 121 of the clip 12 is disposed in the latching slot 114. The card slot 114 is provided with a slit (not shown), and the body 121 of the clip 12 is engaged in the slit. The clip 12 has a square shape. Then, the slits of the plurality of card slots 114 are arranged in a square structure, so that the clip 12 can be limited to be located in the slit, and the position of the clip 12 is ensured to be stable, and the rotation of the clip 12 relative to the limiting slot 112 is prevented from occurring. The phenomenon of shifting.

[0047] The limiting slot 112 is provided with a mouth 115. The mouth 115 can adjust the diameter of the mouth 115 of the limiting groove 112 within a certain range. When the diameter of the rotating shaft 13 is slightly larger than the diameter of the limiting slot 112, the rotating shaft 13 is received in the limiting slot 112, and the sidewall of the limiting slot 112 generates a clamping force on the rotating shaft 13 to stabilize the rotating shaft 13. The container is received in the limiting slot 112. Also, the rotation shaft 13 is prevented from rotating relative to the limit groove 112.

Referring to FIG. 4, the elastic arm 122 includes a long arm 124 and a short arm 125. The long arm 124 is located at one end of the body 121, and the short arm 125 is located at the other end of the body 121. The long arm 124 passes through a notch 113 and enters the slot 132, and the short arm 125 is received in the other notch 113. Specifically, in the present embodiment, the long arm 124 and the short arm 125 are located at both ends of the body 121, respectively.

[0049] The apex angle of the free end of the resilient arm 122 is rounded. That is, the free end of the long arm 124 and the apex angle of the free end of the short arm 125 are rounded, and the rounded corners can serve as a guide for facilitating the smooth insertion of the resilient arm 122 into the slot 132 or the notch 113.

[0050] It can be understood that the short arm 125 can be omitted, and both the elastic arms 122 are long arms 124. Then, the connecting end of the rotating shaft 13 is provided with two card slots 132, and the free ends of the two resilient arms 122 can pass through the notch 113 into the slot 132. The two elastic arms 122 can strengthen the connection strength between the clamp 12 and the rotating shaft 13, and ensure the service life of the knob structure 10.

Specifically, in the embodiment, an end of the body 121 near the long arm 124 is provided with an increasing portion 126, and the height of the enlarged portion 126 is greater than the height of the body 121. The augmenting portion 126 can enhance the magnetic force that the long arm 124 has, which helps the elastic deformation of the long arm 124, and ensures that the long arm 124 can smoothly withdraw from the slot 132 and the notch 113.

[0052] Referring to FIGS. 3 and 4, one end of the rotating shaft 13 received in the limiting slot 112 is a connecting end 131 along which the connecting end 131 is A cutting surface 133 is disposed in the axial direction, and the shape of the limiting groove 112 matches the shape of the connecting end 131. See Figure 2, ie

The limiting slot 112 is provided with a flat portion 116, and the straight portion 116 is adapted to the cutting plane 133. The cut surface of the connecting end 131 13

3, the flat portion 116 of the limiting groove 112 cooperates with each other to prevent the rotating shaft 13 from rotating in the limiting groove 112.

[0053] The card slot 132 is disposed on the cut surface 133. The notch 113 is provided on the flat portion 116. The connecting end 131 of the rotating shaft 13 enters the limiting slot 112, and the cutting surface 133 is aligned with the straight portion 116, so that the slot 132 is aligned with the notch 113, and the free end of the resilient arm 122 is smoothly inserted into the slot 132. .

[0054] The length of the face 133 is equal to the height of the limit groove 112. The cutting surface 133 is completely received in the limiting slot 112, and the rotating shaft 13 outside the limiting slot 112 is cylindrical, so that the cutting plane 133 does not affect the use of the rotating shaft 13 outside the limiting slot 112.

[0055] The end face of the connecting end 131 is provided with a chamfer 134, and the chamfer 134 is disposed near the side of the cut surface. The chamfer 134 of the connecting end 131 can assist the connecting end 131 to enter the limiting slot 112. The connecting end 131 is inserted into the limiting slot 112, and along the guiding action of the chamfer 134 on the connecting end 131, since the chamfer 134 is close to one side of the cutting plane 133, the chamfer 1 34 presses the elastic arm 122 of the clamp 12 to External deformation. When the rotating shaft 13 is assembled to the position 吋, the elastic arm 122 and the engaging groove 132 on the rotating shaft 13 are just aligned, and the elastic arm 122 which has lost the pressing shape is restored to the shape and is inserted into the locking groove 13 of the rotating shaft 13 .

[0056] It should be noted that the shape limitation of the limiting slot 112 and the rotating shaft 13 and the limitation of the positions of the notch 113 and the slot 132 are only preferred embodiments of the present invention, but are not The limit position groove 112 and the rotation shaft 13 may be any shape that can be fixedly received by each other. Moreover, the notch 113 and the slot 132 may be located at other positions of the limiting slot 112 and the rotating shaft 13, which are not exhaustive, as long as the positions of the notch 113 and the slot 132 can be aligned.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. The equivalent structural changes made by the description of the present invention and the contents of the drawings are included in the scope of the present invention.

Claims

Claim

A knob structure, comprising:

The knob cap is provided with a receiving slot, and the bottom of the receiving slot is provided with a limiting slot, and the side wall of the limiting slot is provided with a notch;

The clamp is sleeved on the outer side of the limiting slot, the clip includes an annular body and an elastic arm, and the elastic arm is disposed at an end of the body and is bent toward the inside of the body. The elastic arm is received in the notch, the elastic arm is a magnetizer; the rotating shaft has one end received in the limiting slot, and the side wall of the rotating shaft is provided with a card slot, at least one of the elastic arms The free end passes through the notch and enters the card slot; wherein the elastic arm elastically deforms under the action of a magnetic field to allow the elastic arm to enter and exit the card slot, so that the clamp and the rotating shaft can be Disassemble the connection.

The knob structure according to claim 1, wherein a plurality of latching positions are disposed around the limiting slot, and the plurality of latching positions are disposed around an outer side of the limiting slot, the body of the clip Located in the card position.

The knob structure according to claim 2, wherein the card slot is provided with a slit, and the body of the clip is engaged in the slit.

The knob structure according to claim 1, wherein the limiting slot is provided with a mouthpiece

[Claim 5] The knob structure according to claim 1, wherein the side wall of the limiting slot is provided with two notches, and the elastic arms are two, and the two elastic arms are respectively Correspondingly accommodated in the gap.

[Claim 6] The knob structure according to claim 5, wherein the elastic arm includes a long arm and a short arm, the long arm is located at one end of the body, and the long arm passes through one of the The notch enters the card slot, and the short arm is located at the other end of the body and is received in the other of the notches.

The knob structure according to claim 6, wherein an end of the body adjacent to the long arm is provided with an enlarged portion, and the height of the enlarged portion is greater than a height of the body.

[Claim 8] The knob structure according to claim 1, wherein the free end of the elastic arm The top corner is rounded.

[Claim 9] The knob structure according to claim 1, wherein one end of the rotating shaft received in the limiting slot is a connecting end, and the connecting end is provided with a cutting plane along an axial direction thereof, The shape of the limiting groove matches the shape of the connecting end.

[Claim 10] The knob structure according to claim 9, wherein the card slot is disposed on the cut surface.

[Claim 11] The knob structure according to claim 9, wherein the length of the cut surface is equal to the height of the limit groove.

[Claim 12] The knob structure according to claim 9, wherein an end surface of the connecting end is provided with a chamfer, and the chamfer is disposed near a side of the cutting surface.