Rotary reset scram button

Abstract

The utility model discloses a rotary reset scram button which comprises a sleeve, a button assembly and a torsion spring. A first channel penetrating in the axial direction is formed in the sleeve, a circumferential matching face with the circular cross section is formed in the inner wall of the first channel, a clamping groove concavely formed relative to the circumferential matching face is formed in the inner wall of the first channel, and the outline of the inner wall of the clamping groove comprises a plane abutting section and a cambered surface transition section which are sequentially connected in the transverse direction. One end, far away from the plane abutting section, of the cambered surface transition section is bordered on the circumferential matching surface; the button assembly is arranged in the first channel in a sliding mode in the axial direction. The button assembly is provided with a clamping pin sliding in the radial direction and a spring used for applying pre-tightening force close to the sleeve to the clamping pin. The torsion spring is arranged between the sleeve and the button assembly and used for applying elastic force of axial movement and torsion force of circumferential rotation to the button assembly, and in the initial state, the clamping pin abuts against the circumferential matching face located above the plane abutting section. When the rotary reset scram button is pressed down, resistance basically does not exist.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency stop buttons, in particular to a rotary reset emergency stop button. Background Art

[0002] The emergency stop button can also be called the "emergency stop button", and is referred to as the emergency stop button in the industry. As the name suggests, the emergency stop button is a protective measure that people can take by quickly pressing this button when an emergency occurs. The structure of a conventional emergency stop button can refer to the existing technology CN203503517U or CN218351359U. In the current emergency stop button, the inner wall of the sleeve is provided with an arc-shaped protrusion. When the button is pressed, the spring on the latch overcomes the resistance brought by the arc-shaped protrusion, and the latch can pass over the arc-shaped protrusion, causing the button body to descend, while the arc-shaped protrusion blocks the latch from rising, so that the button body is self-locking; however, in the above process, since the arc-shaped protrusion will block the latch, a certain amount of pressure needs to be provided when pressing the button, which will affect the timeliness of pressing the button. In some major industrial disasters, sometimes a few tenths of a second will have a great impact on the result; in addition, under unexpected factors such as inaccurate component size matching, extreme cases may even cause the button to get stuck during the process of being pressed. Utility Model Content

[0003] In view of this, the present invention proposes a rotary reset emergency stop button, the purpose of which is to eliminate the resistance when the button is pressed and improve the smoothness of the button pressing action.

[0004] The solutions provided by this utility model include:

[0005] A rotary reset emergency stop button, comprising:

[0006] Sleeve, button assembly and torsion spring;

[0007] The sleeve has a first passage extending axially therethrough, the inner wall of the first passage forming a circumferential mating surface having a circular cross section, the inner wall of the first passage being provided with a clamping groove recessed relative to the circumferential mating surface, the inner wall profile of the clamping groove comprising a planar abutment section and an arcuate transition section sequentially connected in a transverse direction, the arcuate transition section having an end away from the planar abutment section adjoining the circumferential mating surface;

[0008] The button assembly is axially slidably disposed in the first channel, and the button assembly is provided with a radially slidable bayonet and a spring for applying a pre-tightening force to the bayonet to approach the sleeve;

[0009] The torsion spring is arranged between the sleeve and the button assembly, and is used to apply an elastic force for axial movement and a torsion force for circumferential rotation to the button assembly. In an initial state, the latch abuts against a circumferential mating surface located above the planar abutment section.

[0010] As a further optional solution, the button assembly includes a pressing head, a core shaft and a trigger member connected in sequence along the axial direction, and a second channel is radially recessed on the outer wall of the core shaft. The pin and spring are both arranged in the second channel, one end of the spring abuts against the end face of the second channel, and the other end of the spring abuts against the pin.

[0011] As a further optional solution, an annular groove is provided on the outer wall of the core shaft, and a sealing ring is provided on the annular groove. A sealed sliding connection is formed between the core shaft and the inner wall of the first channel through the sealing ring.

[0012] As a further optional solution, the inner wall profile of the slot also includes a planar blocking section, which is located at the end of the planar abutment section away from the arc surface transition section, and the planar blocking section borders the circumferential mating surface. At the border between the planar blocking section and the circumferential mating surface, the angle between the tangent of the circumferential mating surface and the planar blocking section is 90-100°.

[0013] As a further optional solution, at the junction of the arcuate transition section and the circumferential mating surface, the angle between the tangent of the arcuate transition section and the tangent of the circumferential mating surface is 165-180°.

[0014] As a further optional solution, a limit block is provided on the inner wall of the first channel and is protruded relative to the circumferential mating surface. A limit groove is provided on the core shaft, and two blocking ends are formed at both ends of the limit groove in the horizontal direction. The limit block is arranged in the limit groove.

[0015] As a further optional solution, the sleeve includes an outer cylinder and an inner cylinder, the inner cylinder is fixed in the outer cylinder, the outer cylinder and the inner cylinder together form the first channel, the circumferential mating surface is formed in the inner cylinder, the core shaft includes a first shaft segment and a second shaft segment, the diameter of the first shaft segment is larger than the second shaft segment, so that an abutment limit portion is formed between the first shaft segment and the second shaft segment; the top of the inner cylinder blocks the movement path of the abutment limit portion to form an extreme position for downward movement of the core shaft;

[0016] The torsion spring is sleeved on the second shaft segment, one end of the torsion spring is fixed on the first shaft segment, and the other end is fixed on the inner cylinder.

[0017] As a further optional solution, the trigger member is connected to the bottom end of the core shaft by a screw, and the width of the trigger member is greater than the diameter of the inner circumferential mating surface of the inner cylinder.

[0018] As a further optional solution, the outer cylinder and the inner cylinder are snap-fitted together.

[0019] Compared with the prior art, the rotary reset emergency stop button of the present application has at least the following beneficial effects: when the rotary reset emergency stop button needs to be pressed to achieve an emergency stop, there will be no feeling of jamming when pressing the button, and there will be basically no resistance when the button is pressed, making the emergency stop of the button smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a rotary reset emergency stop button according to an embodiment of the present utility model;

[0021] Figure 2 This is an exploded schematic diagram of a rotary reset emergency stop button according to an embodiment of the present utility model;

[0022] Figure 3 yes Figure 1 Schematic diagram of the cross section of AA (initial state, button component not pressed);

[0023] Figure 4 yes Figure 3 Schematic diagram of the structure after the button component is pressed;

[0024] Figure 5 This is an exploded schematic diagram of the core shaft and the inner cylinder in the embodiment of the present utility model;

[0025] Figure 6 This is a top cross-sectional view of the core shaft and the inner cylinder after assembly in the embodiment of the present utility model;

[0026] Figure 7 It is a cross-sectional view of the internal structure of the inner cylinder in an embodiment of the present utility model.

[0027] In the figure, 1, sleeve; 1a, outer cylinder; 1b, inner cylinder; 11, circumferential mating surface; 12, slot; 12a, flat abutment section; 12b, arcuate transition section; 12c, flat blocking section; 13, limit block;

[0028] 2. Button assembly; 21. Pressing head; 22. Core shaft; 22a. First shaft segment; 22b. Second shaft segment; 22c. Abutment limit portion; 221. Second channel; 222. Annular groove; 223. Limiting groove; 23. Trigger member; 24. Pin; 25. Spring; 26. Sealing ring; 27. Screw; 3. Torsion spring. DETAILED DESCRIPTION

[0029] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] refer to Figure 1-7, an embodiment of the present invention shows a rotary reset emergency stop button, comprising a sleeve 1, a button assembly 2 and a torsion spring 3; the sleeve 1 has a first channel (not marked in the figure) extending axially therethrough, the inner wall of the first channel is formed with a circumferential mating surface 11 with a circular cross section, the inner wall of the first channel is provided with a card slot 12 recessed relative to the circumferential mating surface 11, the inner wall profile of the card slot 12 includes a plane abutment section 12a and an arcuate transition section 12b connected in sequence in the transverse direction, the arcuate transition section 12b is adjacent to the circumferential mating surface 11 at one end away from the plane abutment section 12a; the button assembly 2 is axially slidably arranged in the first channel, the button assembly 2 is provided with a radially sliding bayonet 24 and a spring 25 for applying a pre-tightening force to the bayonet 24 close to the sleeve 1; the torsion spring 3 is arranged between the sleeve 1 and the button assembly 2, and the torsion spring 3 is used to apply an elastic force for axial movement and a circumferential rotational torsion to the button assembly 2.

[0034] Specifically, if Figure 3 As shown, in the initial state, when the button assembly 2 is not pressed, the bayonet 24 abuts against the circumferential mating surface 11 located above the planar abutting section 12a; when the button assembly 2 is pressed to implement an emergency stop operation, the button assembly 2 descends along the first channel, and the bayonet 24 moves downward. Under the action of the spring 25, the bayonet 24 always maintains a tendency to move away from the central axis of the button assembly 2, that is, the bayonet 24 always abuts against the circumferential mating surface 11 until the bayonet 24 descends to a height position corresponding to the slot 12, as shown in FIG. Figure 4 As shown, at least part of the bayonet 24 is inserted into the slot 12. Since the slot 12 is a concave structure relative to the circumferential mating surface 11, the bayonet 24 will not encounter any resistance during its descent, making the pressing operation smooth and rapid. At the same time, the bayonet 24 remains inserted into the slot 12 under the action of the spring 25. Specifically, the bayonet 24 abuts against the planar abutment section 12a, and the pressing assembly cannot be pulled upward, thus maintaining self-locking of the pressing assembly and ensuring that it is stable after an emergency stop operation and will not accidentally loosen and reset.

[0035] When it is necessary to reset the button assembly 2, first rotate the button assembly 2 to rotate the bayonet 24 in the circumferential direction. The bayonet 24 passes through the planar abutment section 12a and the arcuate transition section 12b in sequence and then reaches the circumferential mating surface 11, that is, the bayonet 24 leaves the slot 12 laterally. Then, under the action of the torsion spring 3, the torsion spring 3 provides the elastic force for axial movement of the button assembly 2 and the torsion force for circumferential rotation, so that the bayonet 24 returns to the circumferential mating surface 11 above the planar abutment section 12a.

[0036] In this way, when the rotary reset emergency stop button needs to be pressed to achieve an emergency stop, there will be no sense of lag in the pressing action, and there will be basically no resistance when the button is pressed, making the button's emergency stop smoother.

[0037] In some embodiments, reference Figure 2-4 The button assembly 2 comprises a pressing head 21, a core shaft 22, and a trigger member 23, which are sequentially connected axially. A second channel 221 is radially recessed on the outer wall of the core shaft 22. The bayonet 24 and spring 25 are both disposed within the second channel 221. One end of the spring 25 abuts the end surface of the second channel 221, while the other end of the spring 25 abuts the bayonet 24. Furthermore, an annular groove 222 is formed on the outer wall of the core shaft 22, and a sealing ring 26 is installed in the groove. This sealing ring 26 forms a sealed sliding connection between the core shaft 22 and the inner wall of the first channel. This ensures a water- and oil-proof seal between the sleeve 1 and the button assembly 2.

[0038] In some embodiments, as Figure 5 and Figure 6 As shown, the inner wall profile of the slot 12 also includes a planar blocking section 12c, which is located at the end of the planar abutment section 12a away from the arcuate transition section 12b, and the planar blocking section 12c is adjacent to the circumferential mating surface 11; the planar blocking section 12c is used to block the latch 24, so that the latch 24 can only move in the direction of the arcuate transition section 12b, so that the button assembly 2 can be smoothly reset.

[0039] Preferably, at the junction of the planar blocking segment 12c and the circumferential mating surface 11, an angle H is formed between the tangent line of the circumferential mating surface 11 and the planar blocking segment 12c, with H being 90-100°. This creates a significant inclination angle between the planar blocking segment 12c and the circumferential mating surface 11, ensuring that the planar blocking segment 12c can effectively block the detent 24, preventing the detent 24 from entering the circumferential mating surface 11 from the direction of the planar blocking segment 12c.

[0040] In some embodiments, as Figure 6 As shown, at the junction of the arcuate transition section 12b and the circumferential mating surface 11, an angle K is formed between the tangent of the arcuate transition section 12b and the tangent of the circumferential mating surface 11, and K is 165-180°. In this embodiment, the junction between the arcuate transition section 12b and the circumferential mating surface 11 is sufficiently smooth, so that the resistance of the latch 24 when passing through the arcuate transition section 12b and entering the circumferential mating surface 11 is reduced, making the reset operation smoother.

[0041] In some embodiments, as Figure 3-6 As shown, a stopper 13 is provided on the inner wall of the first channel, projecting relative to the circumferential mating surface 11. A stopper groove 223 is provided on the core shaft 22, with two blocking ends formed at each lateral end. The stopper 13 is disposed within the stopper groove 223. In this embodiment, the stopper groove 223 is used to laterally limit the stopper 13, thereby limiting the rotation angle of the core shaft 22. Even when the core shaft 22 rotates toward the arcuate transition section 12b, it can only rotate to a certain angle. The stopper groove 223 can serve as a reminder. When the operator feels the stopper 13 hit the closed section of the stopper groove 223 while rotating the button assembly 2, it indicates that the rotation is in place, and the button assembly 2 can be released, driven by the torsion spring 3 to spring up and rotate back. Furthermore, the stopper groove 223 can prevent the button assembly 2 from being over-rotated, which could cause the torsion spring 3 to deform beyond its fatigue strength.

[0042] In some embodiments, reference Figure 2-4 The sleeve 1 includes an outer cylinder 1a and an inner cylinder 1b, the inner cylinder 1b is fixed in the outer cylinder 1a, the outer cylinder 1a and the inner cylinder 1b jointly form the first channel, the circumferential mating surface 11 is formed in the inner cylinder 1b, the core shaft 22 includes a first shaft segment 22a and a second shaft segment 22b, the diameter of the first shaft segment 22a is larger than the second shaft segment 22b, so that abutment limit portion 22c is formed between the first shaft segment 22a and the second shaft segment 22b; the top of the inner cylinder 1b is blocked on the moving path of the abutment limit portion 22c to form the limit position of the downward movement of the core shaft 22; the torsion spring 3 is sleeved on the second shaft segment 22b, one end of the torsion spring 3 is fixed on the first shaft segment 22a, and the other end is fixed on the inner cylinder 1b.

[0043] Among them, during the emergency stop operation, the button assembly 2 is pressed until the abutment limit portion 22c abuts against the top of the inner cylinder 1b to prevent the button assembly 2 from falling excessively; it should be noted that the outer cylinder 1a and the inner cylinder 1b are connected by a snap-fit ​​connection in this embodiment, but in other embodiments they can be an integrated structure, or other conventional fixing methods such as bolt fixing, ultrasonic welding, etc.

[0044] In some embodiments, the trigger member 23 is connected to the bottom end of the core shaft 22 by a screw 27, and the width of the trigger member 23 is greater than the diameter of the inner circumferential mating surface 11 of the inner cylinder 1b. Figure 3 As shown, when the button assembly 2 is reset, the trigger member 23 abuts against the bottom of the inner cylinder 1b, thereby limiting the rising height of the button assembly 2, and it is worthwhile that the axial movement distance of the button assembly 2 is limited.

[0045] In summary, the embodiment of the present invention provides a rotary reset emergency stop button. When the button needs to be pressed to achieve an emergency stop, there will be no feeling of lag when pressing the button, and there will be basically no resistance when the button is pressed, making the button achieve emergency stop more smoothly.

[0046] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A rotary reset emergency stop button, characterized in that: include: sleeve, button assembly, and torsion spring; The sleeve has a first passage extending axially therethrough, the inner wall of the first passage forming a circumferential mating surface having a circular cross section, the inner wall of the first passage being provided with a clamping groove recessed relative to the circumferential mating surface, the inner wall profile of the clamping groove comprising a planar abutment section and an arcuate transition section sequentially connected in a transverse direction, the arcuate transition section having an end away from the planar abutment section adjoining the circumferential mating surface; The button assembly is axially slidably disposed in the first channel, and the button assembly is provided with a radially slidable bayonet and a spring for applying a pre-tightening force to the bayonet to approach the sleeve; The torsion spring is arranged between the sleeve and the button assembly, and is used to apply an elastic force for axial movement and a torsion force for circumferential rotation to the button assembly. In an initial state, the latch abuts against a circumferential mating surface located above the planar abutment section.

2. The rotary reset emergency stop button according to claim 1, characterized in that: The button assembly includes a pressing head, a core shaft and a trigger member connected in sequence along the axial direction. A second channel is radially recessed on the outer wall of the core shaft. The pin and spring are both arranged in the second channel. One end of the spring abuts against the end surface of the second channel, and the other end of the spring abuts against the pin.

3. The rotary reset emergency stop button according to claim 2, characterized in that: An annular groove is provided on the outer wall of the core shaft, and a sealing ring is provided on the annular groove. A sealing sliding connection is formed between the core shaft and the inner wall of the first channel through the sealing ring.

4. The rotary reset emergency stop button according to claim 2, characterized in that: The inner wall profile of the slot also includes a planar blocking section, which is located at one end of the planar abutment section away from the arc surface transition section. The planar blocking section borders the circumferential mating surface. At the border between the planar blocking section and the circumferential mating surface, the angle between the tangent of the circumferential mating surface and the planar blocking section is 90-100°.

5. The rotary reset emergency stop button according to claim 4, characterized in that: At the junction of the arcuate transition section and the circumferential mating surface, an angle between a tangent line of the arcuate transition section and a tangent line of the circumferential mating surface is 165-180°.

6. The rotary reset emergency stop button according to claim 4, characterized in that: A limit block is provided on the inner wall of the first channel and is protruded relative to the circumferential mating surface. A limit groove is provided on the core shaft. Two blocking ends are formed at both ends of the limit groove in the transverse direction. The limit block is arranged in the limit groove.

7. The rotary reset emergency stop button according to claim 6, characterized in that: The sleeve includes an outer cylinder and an inner cylinder, the inner cylinder is fixed in the outer cylinder, the outer cylinder and the inner cylinder together form the first channel, the circumferential mating surface is formed in the inner cylinder, the core shaft includes a first shaft segment and a second shaft segment, the diameter of the first shaft segment is larger than the second shaft segment, so that an abutment limit portion is formed between the first shaft segment and the second shaft segment; the top of the inner cylinder blocks the moving path of the abutment limit portion to form the limit position of the downward movement of the core shaft; The torsion spring is sleeved on the second shaft segment, one end of the torsion spring is fixed on the first shaft segment, and the other end is fixed on the inner cylinder.

8. The rotary reset emergency stop button according to claim 7, characterized in that: The triggering member is connected to the bottom end of the core shaft through a screw, and the width of the triggering member is greater than the diameter of the inner circumferential matching surface of the inner cylinder.

9. The rotary reset emergency stop button according to claim 7, characterized in that: The outer cylinder and the inner cylinder are snap-connected.

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