CN220155425U - Knob and piezoelectric device - Google Patents

Abstract

The utility model belongs to the technical field of electrical components, and discloses a knob and a low-voltage electrical appliance. The knob comprises a first rotary handle and a cam, wherein one end of the first rotary handle is provided with a first connecting part, and the first connecting part comprises a first slot and a second slot which extend along a first direction; the inner wall of the cam is provided with a first bulge and a second bulge; the first bulge is different from the second bulge, the first bulge is matched with the first slot, the second bulge is matched with the second slot, and the first bulge and the second bulge are respectively inserted into the first slot and the second slot. According to the utility model, the first rotary handle and the cam are prevented from being assembled wrongly, and the assembly efficiency is improved.

Description

Knob and piezoelectric device

Technical Field

The utility model relates to the technical field of electrical components, in particular to a knob and a low-voltage electrical appliance.

Background

In the field of electrical appliances such as contactors and relays, a knob for torsion adjustment control is generally provided on a housing.

The actuating end of the knob is provided with a rotary matching structure matched with an actuating mechanism in the shell, and the operating end opposite to the actuating end of the knob is completely exposed out of the surface of the shell, so that an operator can manually twist and adjust the operating end conveniently, and the operating end is provided with a linear operating button.

When the knob is assembled with the cam, a certain assembly direction is arranged in the circumferential direction, and when the knob is assembled, the assembly direction is determined and distinguished by an assembler, but the risk of re-assembly and disassembly caused by wrong assembly is still difficult to avoid, so that the assembly efficiency of the product is reduced.

Disclosure of Invention

The utility model aims to provide a knob and a low-voltage electrical apparatus, which are used for preventing wrong assembly and improving assembly efficiency when a first knob is assembled with a cam.

To achieve the purpose, the utility model adopts the following technical scheme:

a knob, comprising:

the first rotary handle is provided with a first connecting part at one end, and the first connecting part comprises a first slot and a second slot which extend along a first direction;

the inner wall of the cam is provided with a first bulge and a second bulge; the first bulge is different from the second bulge, the first bulge is matched with the first slot, the second bulge is matched with the second slot, and the first bulge and the second bulge are respectively inserted into the first slot and the second slot.

As an alternative scheme of the knob, the knob further comprises a second rotary handle, the second rotary handle is sleeved on the outer side of the first rotary handle, and the cam is in interference fit with the inner wall of the second rotary handle.

As an alternative scheme of knob, follow the outer wall ring of cam is equipped with the mounting groove, be equipped with the sealing washer in the mounting groove, the sealing washer with the inner wall extrusion fit of second knob.

As an alternative of the knob, the knob further comprises a fixing rod, and the fixing rod is sleeved outside the cam.

As an alternative scheme of the knob, a screw sleeve is screwed on the outer side of the fixed rod, and the knob can be fixed on the mounting plate by screwing the screw sleeve.

As an alternative scheme of the knob, the knob further comprises a linkage rod arranged in the fixed rod, an inclined molded surface is arranged at the top of the linkage rod, a wedge block is arranged at the bottom of the cam in a protruding mode, and the wedge block is used for rotationally extruding the inclined molded surface so that the linkage rod moves along the first direction.

As an alternative to a knob, the knob further includes a contact module, and the movement of the linkage rod along the first direction can drive the contact module to move.

As an alternative of the knob, the first connection portion further includes a protrusion, the protrusion is arranged at intervals to form the first slot and the second slot, one end of the protrusion, which is close to the cam, is provided with an inclined plane, and the inclined plane extends along a direction close to the rotation axis of the first knob.

As an alternative to a knob, the first protrusion and the second protrusion are provided with a chamfer at an end near the first knob.

A piezoelectric device comprising a knob as claimed in any one of the above aspects.

According to the utility model, the first rotary handle is connected with the cam through the first connecting part, and specifically, the first bulge and the second bulge are respectively and correspondingly inserted into the first slot and the second slot of the first connecting part to complete plug connection, so that an operator can conveniently drive the cam to rotate by manually twisting the first rotary handle; further, through designing the first bulge and the second bulge into two different structures, and respectively enabling the shape of the first slot to be matched with the first bulge, the shape of the second slot is matched with the second bulge, so that when the first rotary handle is assembled with the cam, only the first rotary handle can be matched and inserted in a corresponding direction, the wrong assembly is effectively prevented, and the assembly efficiency is improved.

Drawings

FIG. 1 is a schematic view of a knob according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a knob with a hidden shaft sleeve according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the remaining structure of the knob of FIG. 2 concealing the fixation lever and contact module;

FIG. 4 is a schematic view of the remaining structure of the knob of FIG. 3 concealing a second twist grip;

FIG. 5 is a schematic view of the remaining structure of the knob of FIG. 4 concealing the first twist grip;

FIG. 6 is a schematic view of the first lever, cam and second lever cooperating structure provided in an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a first twist grip and a second twist grip according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of a first knob according to an embodiment of the present utility model.

In the figure:

x, a first direction;

1. a first rotary handle; 11. a first connection portion; 111. a first slot; 112. a second slot; 113. a bump; 1131. an inclined plane;

2. a cam; 21. a first protrusion; 22. a second protrusion; 23. a mounting groove; 24. a seal ring; 25. wedge blocks; 26. chamfering;

3. a second rotary handle;

4. a fixed rod; 41. an external thread;

5. a linkage rod; 51. an inclined profile;

6. a contact module;

7. a screw sleeve.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Referring to fig. 1 to 8, an aspect of the present embodiment relates to a knob, which includes a first knob 1 and a cam 2, wherein one end of the first knob 1 is provided with a first connection portion 11, and the first connection portion 11 includes a first slot 111 and a second slot 112 extending along a first direction X; the inner wall of the cam 2 is provided with a first bulge 21 and a second bulge 22; the first protrusion 21 and the second protrusion 22 are different, the first protrusion 21 is matched with the first slot 111, the second protrusion 22 is matched with the second slot 112, and the first protrusion 21 and the second protrusion 22 are respectively inserted into the first slot 111 and the second slot 112. In the present embodiment, the first direction X is a direction in which the rotation axis of the first spin handle 1 extends toward the cam 2.

In this embodiment, the first rotary handle 1 is connected with the cam 2 through the first connecting portion 11, specifically, the first protrusion 21 and the second protrusion 22 are respectively inserted into the first slot 111 and the second slot 112 of the first connecting portion 11 correspondingly, so as to complete plug connection, and an operator can conveniently drive the cam 2 to rotate by manually twisting the first rotary handle 1; further, by designing the first protrusion 21 and the second protrusion 22 to have two different structures, specifically, the first protrusion 21 and the second protrusion 22 may be designed to have different widths, and the shape of the first slot 111 is matched with the first protrusion 21, and the shape of the second slot 112 is matched with the second protrusion 22, so that when the first knob 1 is assembled with the cam 2, only the first knob 1 can be inserted in a matched manner according to one corresponding direction, thereby effectively preventing incorrect assembly and improving assembly efficiency.

Alternatively, the first connecting portions 11 may be provided in plural sets, and in this embodiment, two sets of first connecting portions 11 are provided in total, and in correspondence with this, two first protrusions 21 and two second protrusions 22 are also provided on the inner wall of the cam 2 to be engaged with the first connecting portions 11.

Optionally, the knob further comprises a second rotary handle 3, the second rotary handle 3 is sleeved on the outer side of the first rotary handle 1, and the cam 2 is in interference fit with the inner wall of the second rotary handle 3. The second rotary handle 3 is similar to the first rotary handle 1 in shape, so that the second rotary handle 3 is sleeved on the first rotary handle 1 and effectively attached to the first rotary handle 1. Referring to fig. 1-4, in this embodiment, a part of hollow structure is provided at the top of the second rotary handle 3, and when the second rotary handle 3 is matched with the first rotary handle 1, part of the outer wall of the top of the first rotary handle 1 can be exposed at the hollow structure, and meanwhile, the aesthetic degree of the whole knob can be improved by molding the first rotary handle 1 and the second rotary handle 3 with different color materials; in addition, through the interference fit of the cam 2 and the inner wall of the second rotary handle 3, the connecting structure is simpler, and the assembly structure of the first rotary handle 1, the cam 2 and the second rotary handle 3 is more compact.

Optionally, a mounting groove 23 is formed along the outer wall of the cam 2, and a sealing ring 24 is arranged in the mounting groove 23, and the sealing ring 24 is in extrusion fit with the inner wall of the second rotary handle 3. Referring to fig. 4 and 5, the sealing ring 24 embedded in the mounting groove 23 is press-fitted with the inner wall of the second rotary handle 3, so that the waterproof and moistureproof capabilities can be improved.

Optionally, the knob further comprises a fixing rod 4, and the fixing rod 4 is sleeved outside the cam 2. The fixing rod 4 is used for sealing the transmission parts inside the cam 2 and the like inside the cam, protecting the internal structure of the cam, and the fixing rod 4 is also used for fixing the knob at a preset installation position.

Further, the outside of the fixed rod 4 is screwed with a screw sleeve 7, and the knob can be fixed on the mounting plate by screwing the screw sleeve 7. In this embodiment, the knob is fixed at a preset position of the mounting plate by screw-connecting and matching the fixing rod 4 and the screw sleeve 7, specifically, a mounting hole is formed at the preset position of the mounting plate, and part of external threads 41 of the fixing rod 4 penetrate through the mounting hole from one end of the mounting plate, so that the screw sleeve 7 is screw-connected with the fixing rod 4 at the other end, and the mounting plate is clamped under the screw-connecting action of the fixing rod 4 and the screw sleeve 7.

Optionally, the knob further comprises a linkage rod 5 arranged in the fixed rod 4, the top of the linkage rod 5 is provided with a bevel profile 51, the bottom of the cam 2 is convexly provided with a wedge block 25, and the wedge block 25 is used for rotationally extruding the bevel profile 51 so as to enable the linkage rod 5 to move along the first direction X.

Optionally, the knob further includes a contact module 6, and movement of the linkage rod 5 along the first direction X can drive the contact module 6 to act.

Through the manual first spiral arm 1 that rotates of operating personnel, drive cam 2 rotates round self axis of rotation, along with the rotation of cam 2, wedge 25 of cam 2 bottom can continuously extrude inclined profile 51, and make gangbar 5 remove along first direction X gradually, when gangbar 5 reaches extreme position, gangbar 5 triggers the execution end and accomplishes corresponding operation this moment, wedge 25 can block smoothly into the draw-in groove of gangbar 5, when the manual first spiral arm 1 of manual reverse rotation of operating personnel, drive cam 2 rotates round self axis reverse rotation, wedge 25 breaks away from the draw-in groove, gangbar 5 and cam 2 reverse reset.

Alternatively, the linkage bars 5 are in one-to-one correspondence with the wedges 25 and are distributed circumferentially along the rotation axis of the cam 2.

Referring to fig. 1-2 again, in the present embodiment, the executing end is a contact module 6, a transmission mechanism is disposed inside the contact module 6, the transmission mechanism is connected to the contact assembly, and the transmission mechanism is triggered by the linkage rod 5, so as to further realize the opening and closing operations of the contact assembly.

Optionally, the first connecting portion 11 further includes a bump 113, where the bump 113 is arranged at intervals to form the first slot 111 and the second slot 112, and an end of the bump 113 near the cam 2 is provided with an inclined surface 1131, and the inclined surface 1131 extends along a direction near the rotation axis of the first rotation handle 1. Referring to fig. 5-8, the first slot 111 and the second slot 112 are formed by arranging the protruding blocks 113 at intervals, and in order to ensure that the first slot 111 and the second slot 112 are matched with the first protrusion 21 and the second protrusion 22 respectively, in this embodiment, the widths of the first slot 111 and the second slot 112 formed by the three protruding blocks 113 are different, and in addition, by providing the inclined surfaces 1131 on the top of the protruding blocks 113, the protruding blocks 113 can smoothly slide in along the inner wall of the contact cam 2, thereby providing convenience for assembling the first rotary handle 1 and the cam 2.

Optionally, the first protrusion 21 and the second protrusion 22 are provided with a chamfer 26 at an end near the first knob 1. Similarly, by the chamfer 26 of the first protrusion 21 and the second protrusion 22 near the top of the cam 2, the first protrusion 21 and the second protrusion 22 can be easily inserted into the corresponding first slot 111 and second slot 112, and the plugging operation can be quickly completed.

The low-voltage electrical apparatus according to the present embodiment includes a housing, a relay, and an operating end, wherein the operating end is disposed outside the housing, and is used for operating by an operator, and the operating end is disposed outside the housing, and is used for triggering an actuating mechanism of the relay.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Knob, its characterized in that includes:

a first rotary handle (1), wherein a first connecting part (11) is arranged at one end of the first rotary handle (1), and the first connecting part (11) comprises a first slot (111) and a second slot (112) which extend along a first direction (X);

the cam (2), the inner wall of the cam (2) is provided with a first bulge (21) and a second bulge (22); the first bulge (21) and the second bulge (22) are different, the first bulge (21) is matched with the first slot (111), the second bulge (22) is matched with the second slot (112), and the first bulge (21) and the second bulge (22) are respectively spliced with the first slot (111) and the second slot (112).

2. The knob according to claim 1, further comprising a second knob (3), wherein the second knob (3) is sleeved outside the first knob (1), and the cam (2) is in interference fit with the inner wall of the second knob (3).

3. Knob according to claim 2, characterized in that a mounting groove (23) is provided along the outer wall of the cam (2), a sealing ring (24) is provided in the mounting groove (23), and the sealing ring (24) is in press fit with the inner wall of the second knob (3).

4. The knob according to claim 1, further comprising a fixing rod (4), said fixing rod (4) being sleeved outside said cam (2).

5. The knob according to claim 4, wherein a screw sleeve (7) is screwed on the outer side of the fixing rod (4), and the knob can be fixed on the mounting plate by screwing the screw sleeve (7).

6. The knob according to claim 5, further comprising a linkage rod (5) provided in the fixed rod (4), wherein a sloped profile (51) is provided at the top of the linkage rod (5), a wedge (25) is provided protruding at the bottom of the cam (2), and the wedge (25) is configured to rotationally squeeze the sloped profile (51) such that the linkage rod (5) moves in the first direction (X).

7. The knob according to claim 6, further comprising a contact module (6), wherein movement of the linkage rod (5) in the first direction (X) can actuate the contact module (6).

8. The knob according to any one of claims 1-7, wherein the first connection portion (11) further comprises a protrusion (113), the protrusion (113) is arranged at intervals to form the first slot (111) and the second slot (112), one end of the protrusion (113) close to the cam (2) is provided with a slope (1131), and the slope (1131) extends in a direction close to the rotation axis of the first knob (1).

9. The knob according to any of claims 1-7, wherein the first protrusion (21) and the second protrusion (22) are provided with a chamfer (26) at an end near the first knob (1).

10. Low voltage electrical appliance comprising a knob according to any of claims 1-9.