Knob device

Abstract

The utility model provides a knob device, which relates to the technical field of mechanical equipment and comprises a rotating shaft, a switch seat and a limit structure, the switch seat is movably sleeved outside the rotating shaft, the rotating shaft can circumferentially rotate or axially move relative to the switch seat, and the switch seat is in limit fit with the rotating shaft through the limit structure. The limiting structure comprises a limiting groove set formed in the peripheral wall of the rotating shaft, and a limiting stopper which is arranged on the switch base, inserted into the limiting groove set and matched with the limiting groove set in a limiting mode. And the rotating shaft is limited to circumferentially rotate or axially slide relative to the switch seat in a limited range through the limiting matching of the limiting stopper and the limiting groove. According to the device, various switch control can be realized through rotation and shooting, and various control functions can be executed by a single device.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a knob device. Background Art

[0002] In the fields of industrial automation, mechanical processing, power control, etc., the emergency stop button is an important safety protection device. Its reliability and functionality are crucial to ensure the safety of operators and the stable operation of equipment. With the increasing diversification of production environments, especially in industries such as food processing, chemical industry, and outdoor operations, equipment frequently faces humid and dusty working conditions, which puts higher requirements on the protection level of emergency stop buttons.

[0003] Most of the existing emergency stop button designs focus on the basic emergency stop function, usually by quickly tapping the knob to quickly cut off the power supply to prevent accidents. However, these designs often have several common problems: first, the protection level is mostly IP65 or lower, and it is difficult to maintain good performance in long-term exposure to water vapor or dust environments; second, the function is single, only emergency stop but lacks locking or multiple control states, which limits its application in complex systems. Utility Model Content

[0004] The utility model aims to provide a knob device to solve the technical problem of poor adaptation working conditions in the prior art.

[0005] In order to solve the above problems, a knob device involved in the present utility model adopts the following technical solutions:

[0006] The utility model provides a knob device, including a knob mechanism, which includes a rotating shaft, a switch seat, and a limiting structure. The switch seat is movably sleeved on the outer side of the rotating shaft, and the rotating shaft can rotate circumferentially or move axially relative to the switch seat. The switch seat and the rotating shaft are limited by the limiting structure. The limiting structure includes a limiting groove group opened on the outer peripheral wall of the rotating shaft, a limiter arranged on the switch seat and inserted into the limiting groove group, and the limiting groove group includes two circumferential sliding grooves that are parallel and respectively opened along the circumferential direction of the peripheral wall of the rotating shaft, and two parallel sliding grooves. The two circumferential grooves are located between the two axial grooves, and the two ends of the two circumferential grooves are respectively intersected and communicated with the same side ends of the two axial grooves. The limiter cooperates with the limit groove to enable the limiter to move along the limit groove group and the groove wall of the limit groove group blocks the limiter from moving out. When the user screws or presses the rotating shaft, the rotating shaft is limited by the limiter and the limit groove to limit its circumferential rotation or axial sliding relative to the switch seat within a limited range.

[0007] Preferably, the invention further comprises a first micro switch, a second micro switch, and an emergency stop plate which is arranged below the switch seat and movably sleeved on the outside of the rotating shaft. The first micro switch and the second micro switch are installed on the emergency stop plate. The bottom of the rotating shaft is arranged as a reducing section whose axial diameter gradually decreases. A protrusion is arranged on one side of the peripheral wall of the reducing section. During the rotation of the rotating shaft relative to the switch seat, the protrusion can be abutted against or separated from the first micro switch to squeeze the first micro switch to open or close. During the axial movement of the rotating shaft relative to the switch seat, the bottom of the rotating shaft can be abutted against or separated from the first micro switch and the second micro switch at the same time to squeeze the first micro switch and the second micro switch to open or close at the same time.

[0008] Preferably, it also includes a lampshade, a lamp board, and a first O-ring, the first O-ring is sleeved on the outside of the rotating shaft, a stopper is provided on the inner circumferential wall of the lampshade, a stopper groove which cooperates with the stopper is provided on the outer circumferential wall of the rotating shaft, the lampshade is provided on the top of the rotating shaft, the stopper is located in the stopper groove, the inner wall of the lampshade is against the first O-ring, the lamp board is located in the lampshade and is provided on the top of the rotating shaft, the stopper cooperates with the stopper groove to limit the separation of the lampshade and the rotating shaft.

[0009] Preferably, the stopping groove includes a first groove and a second groove which are circumferentially arranged and connected along the outer circumferential wall of the rotating shaft, an opening connected to the outside is provided at the upper end of the first groove, and a third groove is recessed downward on the lower end surface of the first groove, and the stopping member includes a cantilever and a horizontal rib which are circumferentially arranged and connected in sequence along the inner circumferential wall of the lampshade, the front side wall of the cantilever is connected to the inner circumferential wall of the lampshade, and the rear bottom wall of the cantilever is provided with a buckle protruding from it, and the top wall height of the cantilever is higher than the top wall height of the horizontal rib, and when the stopping member is engaged with the stopping groove, the horizontal rib is matched and inserted into the second groove, and the buckle is inserted into the third groove, and the front end of the cantilever is against the end wall of the second groove.

[0010] Preferably, it also includes a dust cover and a second O-ring, the dust cover is arranged on the outside of the rotating shaft and the switch seat, the two ends of the dust cover are respectively connected to the upper part of the rotating shaft and the upper part of the switch seat, an annular groove is circumferentially provided on the outer peripheral wall of the rotating shaft, the second O-ring is arranged in the annular groove, and the inner wall of the switch seat is adjacent to the second O-ring.

[0011] Preferably, it also includes a bracket movably sleeved on the outside of the rotating shaft, the bracket is located between the switch seat and the emergency stop plate, and the bracket is respectively fixed to the emergency stop plate and the switch seat.

[0012] Preferably, a third O-ring sleeved on the outer side of the rotating shaft is provided between the bracket and the switch seat, and the bracket and the switch seat both abut against the third O-ring.

[0013] Preferably, the limiter includes a spring and a ball, a receiving hole for receiving the limiter is opened on the inner wall of the switch seat, the spring and the ball are both arranged in the receiving hole, the two ends of the spring are respectively against the receiving hole and the spring, and the spring is against the limit groove group.

[0014] Preferably, any intersection of the circumferential sliding groove and the axial sliding groove is provided with a positioning groove in the radial direction through which the matching steel ball can pass, and the depth of the positioning groove is greater than the depth of the non-intersecting part of the limiting groove group.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model provides a knob device, including a rotating shaft, a switch seat, and a limiting structure. The switch seat is movably sleeved on the outer side of the rotating shaft. The rotating shaft can rotate circumferentially or move axially relative to the switch seat. The switch seat and the rotating shaft are limited by the limiting structure. The limiting structure includes a limiting groove group opened on the outer peripheral wall of the rotating shaft, and a limiter arranged on the switch seat and inserted into the limiting groove group and limitedly matched with the limiting groove group. When the user rotates or presses the rotating shaft, the rotating shaft is limited to rotate circumferentially or slide axially relative to the switch seat within a limited range through the limiting cooperation of the limiter and the limiting groove. The device can realize multiple switch controls by rotating and tapping, and a single device performs multiple control functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment:

[0018] Figure 1 This is an exploded view of the knob mechanism;

[0019] Figure 2 is a cross-sectional view of the knob mechanism;

[0020] Figure 3 It is an isometric view of a knob device;

[0021] Figure 4 is a structural schematic diagram of the rotating shaft;

[0022] Figure 5 for Figure 3 Another perspective axonometric view;

[0023] Figure 6 for Figure 3 A cross-sectional view of

[0024] Figure 7 This is a schematic diagram of the dust cover structure.

[0025] Explanation of the reference numerals: 101-lamp cover, 102-dust cover, 103-lamp board, 104-adhesive, 105-second O-ring, 106-rotating shaft, 107-first O-ring, 108-switch seat, 109-ball, 110-spring, 112-third O-ring, 113-limiting groove group, 114-reducing section, 115-protrusion, 116-bracket, 117-emergency stop plate, 118-first micro switch, 119-second micro switch, 120-first groove, 121-second groove, 122-third groove, 123-cantilever, 124-horizontal rib, 125-snap. DETAILED DESCRIPTION

[0026] In order to make the technical purpose, technical solution and beneficial effects of the present utility model clearer, the technical solution of the present utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] The utility model provides a knob device, as shown in the figure, including a knob mechanism, the knob mechanism includes a rotating shaft 106, a switch seat 108, and a limiting structure, the switch seat 108 is movably sleeved on the outer side of the rotating shaft 106, the rotating shaft 106 can rotate circumferentially or move axially relative to the switch seat 108, the switch seat 108 and the rotating shaft 106 are limited by the limiting structure, the limiting structure includes a limiting groove group 113 opened on the outer peripheral wall of the rotating shaft 106, and a limiter arranged on the switch seat 108 and inserted into the limiting groove group 113, the limiting groove group 113 includes two circumferential sliding grooves that are parallel and respectively opened along the circumferential direction of the peripheral wall of the rotating shaft 106, and two circumferential sliding grooves that are parallel and respectively opened along the peripheral wall of the rotating shaft 106. An axial slide groove is opened axially, and two circumferential slide grooves are located between the two axial slide grooves. The two ends of one circumferential slide groove are respectively intersected and connected with the same side ends (same height ends) of the two axial slide grooves, and the two ends of the other circumferential slide groove are respectively intersected and connected with the same side ends (same height ends) of the two axial slide grooves. The same side ends mentioned twice above refer to the two ends of the axial slide groove respectively. The limiter can move along the limit groove group 113 and the groove wall of the limit groove group 113 prevents the limiter from moving out therefrom. When the user screws or presses the rotating shaft 106, the rotating shaft 106 is limited by the limiting cooperation between the limiter and the limit groove to limit its circumferential rotation or axial sliding relative to the switch seat 108 within a limited range.

[0028] The limiter includes a spring 110 and a ball 109. A receiving hole for accommodating the limiter is opened on the inner wall of the switch seat 108. The spring 110 and the ball 109 are both arranged in the receiving hole. The two ends of the spring 110 are respectively abutted against the receiving hole and the spring 110. The spring 110 is abutted against the limiting groove group 113. Any intersection of the circumferential slide groove and the axial slide groove is recessed with a positioning groove in the radial direction for the matching steel ball to pass through. The depth of the positioning groove is greater than the depth of the non-intersecting part of the limiting groove group 113.

[0029] The knob device also includes a first micro switch 118, a second micro switch 119, and an emergency stop plate 117 disposed below the switch seat 108 and movably sleeved on the outside of the rotating shaft 106. The first micro switch 118 and the second micro switch 119 are installed on the emergency stop plate 117. The bottom of the rotating shaft 106 is configured as a reducing section 114 whose axial diameter gradually decreases. A protrusion 115 is disposed on one side of the peripheral wall of the reducing section 114. During the rotation of the rotating shaft 106 relative to the switch seat 108, the protrusion 115 can be abutted against or separated from the first micro switch 118 to squeeze the first micro switch 118 to open or close. During the axial movement of the rotating shaft 106 relative to the switch seat 108, the bottom of the rotating shaft 106 can be abutted against or separated from the first micro switch 118 and the second micro switch 119 at the same time to squeeze the first micro switch and the second micro switch 119 to open or close at the same time. The micro switch is a prior art, and it has a spring for controlling its opening and closing. The bottom of the rotating shaft 106 abuts against or separates from the first micro switch 118 and the second micro switch 119 to squeeze the first micro switch and the second micro switch 119 to open or close at the same time, which means that the rotating shaft 106 squeezes the spring to work to achieve effective control. Further, the first micro switch 118 and the second micro switch 119 are arranged on the outside of the rotating shaft 106 at 90 degrees with the rotating shaft 106 as the center.

[0030] Further, the device also includes a lampshade 101, a lamp board 103, and a first O-ring 107. The outer wall of the rotating shaft 106 is provided with a first ringway located above the switch seat 108. The first O-ring 107 is sleeved in the first ringway. A stopper is provided on the inner circumferential wall of the lampshade 101. A stopper groove that cooperates with the stopper is provided on the outer circumferential wall of the rotating shaft 106. The lampshade 101 is covered on the top of the rotating shaft 106. The stopper is located in the stopper groove. The inner wall of the lampshade 101 and the first O-ring 107 are in contact with each other. On the contrary, the lamp board 103 is located in the lampshade 101 and is arranged on the top of the rotating shaft 106. A positioning column is arranged on the top of the rotating shaft 106. The lamp board 103 passes through the positioning column and is adhered to the rotating shaft 106 through the adhesive 104. The lamp board 103 is the existing technology of the alarm lamp board 103, on which lamp beads are arranged. The stopper and the stop groove cooperate to limit the separation of the lampshade 101 and the rotating shaft 106. The rotating shaft 106 is a hollow structure so that the wiring of the alarm light board 103 can extend into the circuit board inside the shell.

[0031] The stopping groove includes a first groove 120 and a second groove 121 which are circumferentially arranged and connected along the outer wall of the rotating shaft 106, the lower end surface of the first groove 120 is flush with the lower end surface of the second groove 121, the upper end surface of the first groove 120 is flush with the upper end surface of the second groove 121, the upper end of the first groove 120 is provided with an opening connected to the outside, and the lower end of the first groove 120 is recessed downwardly with a third groove 122.

[0032] The stopper includes a cantilever 123 and a horizontal rib 124 which are arranged circumferentially along the inner circumferential wall of the lampshade 101 and connected in sequence. The front side wall of the cantilever 123 is connected to the inner circumferential wall of the lampshade 101 (that is, part of the cantilever 123 is connected to the inner circumferential wall of the lampshade 101), and the rear bottom wall of the cantilever 123 is provided with a buckle 125 protruding downward therefrom. The top wall height of the cantilever 123 is higher than the top wall height of the horizontal rib 124. When the stopper is engaged with the stopper groove, the horizontal rib 124 is matched and inserted into the second groove 121. The front end of the cantilever 123 abuts against the end wall of the second groove 121, and the tail of the cantilever 123 is inserted into the third groove 122. The horizontal rib 124 is matched and inserted into the second groove 121 to limit the axial separation of the lampshade 101 and the rotating shaft 106. The front end of the cantilever 123 abuts against the end wall of the second groove 121 and the tail of the cantilever 123 is inserted into the third groove 122 to limit the circumferential rotation of the lampshade 101 and the rotating shaft 106. The opening on the first groove 120 is convenient for the stopper to enter the stop groove.

[0033] Furthermore, it also includes a dust cover 102 and a second O-ring 105. The dust cover 102 is sleeved on the outer side of the rotating shaft 106 and the switch seat 108. The dust cover 102 is a silicone piece. The two ends of the dust cover 102 are respectively tightly sleeved and connected to the upper part of the rotating shaft 106 and the upper part of the switch seat 108, so as to play a role in strengthening protection in dusty environments. A ring groove is circumferentially provided on the outer peripheral wall of the rotating shaft 106. The second O-ring 105 is sleeved in the ring groove. The inner wall of the switch seat 108 is adjacent to the sleeve of the second O-ring 105. When the rotating shaft 106 is installed in the switch seat 108, the second O-ring 105 is compressed to form an effective seal. Here, it is a dynamic seal, which can achieve effective sealing while satisfying the normal rotation and sliding of the rotating shaft 106.

[0034] The device further includes a bracket 116 movably sleeved on the outside of the rotating shaft 106, the bracket 116 is located between the switch seat 108 and the emergency stop plate 117, and the bracket 116 is respectively fixed to the emergency stop plate 117 and the switch seat 108. A third O-ring 112 sleeved on the outside of the rotating shaft 106 is provided between the bracket 116 and the switch seat 108, and the bracket 116 cooperates with the switch seat 108 to compress the third O-ring 112.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A knob device, characterized in that: The switch seat is movably sleeved on the outer side of the rotating shaft, and the rotating shaft can rotate circumferentially or move axially relative to the switch seat. The switch seat and the rotating shaft are limited by the limiting structure. The limiting structure includes a limiting groove group opened on the outer peripheral wall of the rotating shaft, and a limiter arranged on the switch seat and inserted into the limiting groove group. The limiting groove group includes two circumferential slide grooves which are parallel and respectively opened along the circumferential direction of the peripheral wall of the rotating shaft, and two axial slide grooves which are parallel and respectively opened along the axial direction of the peripheral wall of the rotating shaft. The two circumferential slide grooves are located between the two axial slide grooves, and the two ends of the two circumferential slide grooves are respectively intersected and communicated with the same side ends of the two axial slide grooves. The limiter and the limiting groove are limited to enable the limiter to move along the limiting groove group and the groove wall of the limiting groove group blocks the limiter from moving out thereof. When the user screws or presses the rotating shaft, the rotating shaft is limited by the limiting cooperation between the limiter and the limiting groove to rotate circumferentially or slide axially relative to the switch seat within a limited range.

2. A knob device according to claim 1, characterized in that: It also includes a first micro-switch, a second micro-switch, and an emergency stop plate arranged below the switch seat and movably sleeved on the outside of the rotating shaft. The first micro-switch and the second micro-switch are installed on the emergency stop plate. The bottom of the rotating shaft is arranged as a reducing section whose axial diameter gradually decreases. A protrusion is arranged on one side of the peripheral wall of the reducing section. During the rotation of the rotating shaft relative to the switch seat, the protrusion can be abutted against or separated from the first micro-switch to squeeze the first micro-switch to open or close. During the axial movement of the rotating shaft relative to the switch seat, the bottom of the rotating shaft can be abutted against or separated from the first micro-switch and the second micro-switch at the same time to squeeze the first micro-switch and the second micro-switch to open or close at the same time.

3. A knob device according to claim 1 or 2, characterized in that: It also includes a lampshade, a lamp board, and a first O-ring. The first O-ring is sleeved on the outside of the rotating shaft. A stopper is provided on the inner circumferential wall of the lampshade. A stopper groove that cooperates with the stopper is provided on the outer circumferential wall of the rotating shaft. The lampshade is provided on the top of the rotating shaft. The stopper is located in the stopper groove. The inner wall of the lampshade is against the first O-ring. The lamp board is located in the lampshade and is provided on the top of the rotating shaft. The stopper cooperates with the stopper groove to limit the separation of the lampshade and the rotating shaft.

4. A knob device according to claim 3, characterized in that: The stopping groove includes a first groove and a second groove which are circumferentially arranged and connected along the outer circumferential wall of the rotating shaft, an opening which is connected to the outside is provided at the upper end of the first groove, and a third groove is recessed downward on the lower end surface of the first groove, and the stopping piece includes a cantilever and a horizontal convex rib which are circumferentially arranged and connected in sequence along the inner circumferential wall of the lampshade, the front side wall of the cantilever is connected to the inner circumferential wall of the lampshade, the rear bottom wall of the cantilever is provided with a buckle protruding from it, the top wall height of the cantilever is higher than the top wall height of the horizontal convex rib, when the stopping piece is matched with the stopping groove, the horizontal convex rib is matched and inserted into the second groove, the buckle is inserted into the third groove, and the front end of the cantilever is against the end wall of the second groove.

5. A knob device according to claim 4, characterized in that: It also includes a dust cover and a second O-ring, which is arranged on the outside of the rotating shaft and the switch seat, and the two ends of the dust cover are respectively connected to the upper part of the rotating shaft and the upper part of the switch seat, and an annular groove is circumferentially arranged on the outer wall of the rotating shaft, and the second O-ring is arranged in the annular groove, and the inner wall of the switch seat is adjacent to the second O-ring.

6. The knob device according to claim 2, characterized in that: It also includes a bracket movably sleeved on the outer side of the rotating shaft, the bracket is located between the switch seat and the emergency stop plate, and the bracket is respectively fixed to the emergency stop plate and the switch seat.

7. The knob device according to claim 6, characterized in that: A third O-ring sleeved on the outer side of the rotating shaft is arranged between the bracket and the switch seat, and the bracket and the switch seat both abut against the third O-ring.

8. The knob device according to claim 1, characterized in that: The limiter includes a spring and a ball. A receiving hole for receiving the limiter is opened on the inner wall of the switch seat. The spring and the ball are both arranged in the receiving hole. The two ends of the spring are respectively against the receiving hole and the spring, and the spring is against the limiting groove group.

9. The knob device according to claim 8, characterized in that: Any intersection of the circumferential sliding groove and the axial sliding groove is provided with a positioning groove in the radial direction through which the matching steel ball can pass, and the depth of the positioning groove is greater than the depth of the non-intersecting part of the limiting groove group.

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