Scram button protection structure

Abstract

The utility model provides a scram button protection structure, which belongs to the technical field of scram buttons and comprises a shell, an end cover, a normally-closed structure and an opening limiting structure. The shell is used for placing the scram button; one side surface of the shell is an opening surface, and a first connecting part is arranged on the shell; the end cover is provided with a second connecting part, and the second connecting part is hinged to the first connecting part; the normally closed structure is connected between the first connecting part and the second connecting part; and the opening limiting structure is arranged on the second connecting part. The normally-closed structure is used for controlling the end cover to be in a normally-closed state so as to block the opening surface; when the end cover is turned over and the opening limiting structure abuts against the opening face, the end cover is in an opening positioning state. When the emergency stop operation is not needed, the end cover blocks the opening surface, so that the emergency stop button is prevented from being exposed outside; when emergency stop operation is needed, the end cover can be in an opening positioning state and cannot swing at will only by manually overturning the end cover till the opening limiting structure abuts against the opening face, and the convenience and reliability of the emergency stop operation are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of emergency stop buttons, and more specifically, relates to a protective structure for an emergency stop button. Background Art

[0002] Emergency stop buttons are important command buttons indispensable for various engineering equipment. Pressing the emergency stop button can quickly stop the equipment or release some transmission parts, playing a very important role in emergency and special situations.

[0003] Existing emergency stop buttons are generally exposed without protection measures, posing a risk of accidental touch and shutdown. Moreover, if the emergency stop button is used in a harsh environment, it is extremely easy to cause corrosion and damage, shortening the service life. To avoid the exposure of the emergency stop button, a protective cover is also provided outside the emergency stop button to form a shield. However, the existing protective cover is not convenient to open and close, resulting in a long emergency stop operation time and poor reliability. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a protective structure for an emergency stop button, aiming to solve the technical problems of inconvenient opening and closing operations and poor reliability existing in the prior art.

[0005] To achieve the above object, the technical solution adopted by the utility model is: to provide a protective structure for an emergency stop button, including:

[0006] A housing for placing the emergency stop button; one side surface of the housing is an open surface, and a first connecting portion is provided on the housing;

[0007] An end cover is provided with a second connecting portion, and the second connecting portion is hinged to the first connecting portion;

[0008] A normally closed structure is connected between the first connecting portion and the second connecting portion; and

[0009] An opening limiting structure is arranged on the second connecting portion;

[0010] Wherein, the normally closed structure is used to control the end cover to be in a normally closed state to block the open surface; when the end cover is flipped and the opening limiting structure abuts against the open surface, the end cover is in an open positioning state.

[0011] In a possible implementation manner, the axial direction of the end cover is defined as the first direction; the opening limiting structure is arranged on the radially outer end surface of the second connecting portion, and the opening limiting structure extends along the inner side of the end cover in the first direction;

[0012] When the end cover is in a normally closed state, the opening limiting structure is located at the radially outer periphery of the open surface.

[0013] In some embodiments, the inner surface of the second connecting portion has an abutting plane and a convex arc surface that are sequentially connected; the abutting plane is flush with the inner end face of the end cover; in the first direction, the convex arc surface protrudes toward the inside of the end cover relative to the abutting plane;

[0014] When the end cover is in the normally closed state, the abutting plane abuts against the opening surface, and the convex arc surface is located radially outside the opening surface;

[0015] When the end cover is flipped, the convex arc surface passes through the outer peripheral surface of the housing.

[0016] In some embodiments, the outer peripheral surface of the housing has an arc-shaped transition surface; when the end cover is flipped, the convex arc surface passes through the arc-shaped transition surface.

[0017] In a possible implementation, the normally closed structure includes:

[0018] A torsion elastic member, with the first end connected to the housing or the first connecting portion and the second end connected to the second connecting portion.

[0019] In some embodiments, the second connecting portion has a receiving cavity and a limiting groove communicating with the receiving cavity. The torsion elastic member is located in the receiving cavity, and the second end of the torsion elastic member is embedded in the limiting groove.

[0020] In some embodiments, the first connecting portion includes two spaced-apart connecting ears, and each connecting ear extends radially outward from the housing;

[0021] The second connecting portion is disposed on the outer peripheral surface of the end cover and extends radially outward from the end cover; the second connecting portion is located between the two connecting ears, and the second connecting portion is hinged to the two connecting ears through a rotating shaft.

[0022] In some embodiments, the torsion elastic member is sleeved on the rotating shaft; a notch is provided on the second connecting portion, and the first end of the torsion elastic member extends out of the notch and is connected to the housing or the first connecting portion.

[0023] In a possible implementation, a clamping structure is provided between the end cover and the housing; when the end cover is in the normally closed state, the end cover and the housing are also clamped and fixed through the clamping structure.

[0024] In a possible implementation, a sleeve is provided inside the housing, and a reinforcing rib group is provided between the inner wall of the housing and the outer wall of the sleeve; the inner cavity of the sleeve forms a limiting cavity for limiting the emergency stop button.

[0025] The beneficial effects of the emergency stop button protection structure provided by the present utility model are as follows: Compared with the prior art, in the emergency stop button protection structure of the present utility model, the housing is sleeved outside the emergency stop button to form an occlusion for the emergency stop button; the end cover is hinged to the housing through the second connecting part and the first connecting part, and the normally closed structure controls the end cover to be in a normally closed state. When emergency stop operation is not required, the end cover seals the opening surface of the housing to prevent the emergency stop button from being exposed; when emergency stop operation is required, only need to manually flip the end cover until the opening limiting structure abuts against the opening surface, and the end cover can be in an open positioning state, without swinging randomly, and will not affect the operation of pressing the emergency stop button, improving the convenience and reliability of the emergency stop operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the prior art descriptions. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Structural schematic diagram of the emergency stop button protection structure provided by the embodiment of the present utility model Figure 1 (In the figure, the end cover is in the open positioning state);

[0028] Figure 2 Cross-sectional structural schematic diagram of the emergency stop button protection structure provided by the embodiment of the present utility model Figure 1 (In the figure, the end cover is in the open positioning state);

[0029] Figure 3 For Figure 2 The enlarged structural schematic diagram at circle A in

[0030] Figure 4 Structural schematic diagram of the emergency stop button protection structure provided by the embodiment of the present utility model Figure 2 (In the figure, the end cover is in the normally closed state);

[0031] Figure 5 Cross-sectional structural schematic diagram of the emergency stop button protection structure provided by the embodiment of the present utility model Figure 2 (In the figure, the end cover is in the normally closed state);

[0032] Figure 6 For Figure 5 The enlarged structural schematic diagram at circle B in

[0033] Figure 7 For Figure 5 The enlarged structural schematic diagram at circle C in

[0034] Figure 8Schematic diagram of the housing of the emergency stop button protection structure provided by the embodiment of the present utility model;

[0035] Figure 9 Schematic diagram of the end cover of the emergency stop button protection structure provided by the embodiment of the present utility model;

[0036] Figure 10 is Figure 9 Enlarged structural schematic diagram at the middle circle D.

[0037] In the figure: 1. Housing; 11. Opening surface; 12. First connecting part; 121. Connecting ear; 13. Arc transition surface; 14. Sleeve; 15. Reinforcing rib group; 2. End cover; 21. Second connecting part; 211. Abutting plane; 212. Outer convex arc surface; 213. Accommodation cavity; 214. Limiting groove; 215. Notch; 22. Opening limiting structure; 23. Rotating shaft; 3. Normally closed structure; 4. Clamping structure; 41. First buckle; 42. Second buckle; 5. Emergency stop button. Detailed implementation manners

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0039] Please refer to Figures 1 to 6 simultaneously, and now the emergency stop button protection structure provided by the present utility model will be described. The emergency stop button protection structure includes a housing 1, an end cover 2, a normally closed structure 3 and an opening limiting structure 22. The housing 1 is used to place the emergency stop button 5; one side surface of the housing 1 is an opening surface 11, and the housing 1 is provided with a first connecting part 12; the end cover 2 is provided with a second connecting part 21, and the second connecting part 21 is hinged to the first connecting part 12; the normally closed structure 3 is connected between the first connecting part 12 and the second connecting part 21; the opening limiting structure 22 is arranged on the second connecting part 21. Among them, the normally closed structure 3 is used to control the end cover 2 to be in a normally closed state to block the opening surface 11, as Figure 5 shown; when the end cover 2 is flipped and the opening limiting structure 22 abuts against the opening surface 11, the end cover 2 is in an opening positioning state, as Figure 2 shown.

[0040] The housing 1 covers the outside of the emergency stop button 5, the button part of the emergency stop button 5 is located inside the housing 1, and faces the opening surface 11. One end of the emergency stop button 5 passes through the housing 1 and is electrically connected to the device.

[0041] The first connecting portion 12 is located on the outer peripheral surface of the housing 1 and / or on the opening surface 11. The second connecting portion 21 is located on the outer peripheral surface of the end cover 2. The second connecting portion 21 is hinged to the first connecting portion 12, and the end cover 2 swings around the hinge axis to achieve opening and closing.

[0042] The normally closed structure 3 is arranged between the first connecting portion 12 and the second connecting portion 21. The normally closed structure 3 can be a torsion elastic member or a linear elastic member, storing energy in the direction of closing the end cover 2. Without the action of an external force by a human, the end cover 2 is kept in a normally closed state to block the opening surface 11. The normally closed structure 3 can also be a mechanical limiting structure, such as an abutting structure or a clamping structure. Without the action of an external force by a human, the end cover 2 is kept in a normally closed state through mechanical limiting to block the opening surface 11. It should be noted that when the end cover 2 is manually flipped, the external force by a human can overcome the limiting force of the normally closed structure 3 to open the end cover 2, and the button portion of the emergency stop button 5 is exposed.

[0043] The opening limiting structure 22 is arranged on the second connecting portion 21 and forms a movement track along with the swing of the end cover 2. The opening limiting structure 22 can be integrally formed with the second connecting portion 21 or can be separately arranged on the second connecting portion 21. The opening limiting structure 22 has an abutting surface. When the end cover 2 is in a normally closed state, the opening limiting structure 22 is far away from the opening surface 11. When a human overcomes the limiting force of the normally closed structure 3 to swing the end cover 2 and the abutting surface of the opening limiting structure 22 abuts against the opening surface 11, since the opening limiting structure 22 and the opening surface 11 abut against each other along the axial direction of the housing 1, a limit is formed in the rotation direction of the end cover 2. Even if the external force by a human is withdrawn, the end cover 2 can maintain a stable open positioning state, so that the operator's hand can be liberated and focused on the emergency stop operation of the emergency stop button 5, thereby increasing the reliability and convenience of the emergency stop operation.

[0044] Compared with the prior art, for the emergency stop button protection structure provided by the present utility model, the housing 1 covers the outside of the emergency stop button 5 to form a shield for the emergency stop button 5. The end cover 2 is hinged to the housing 1 through the second connecting portion 21 and the first connecting portion 12, and the normally closed structure 3 controls the end cover 2 to be in a normally closed state. When emergency stop operation is not required, the end cover 2 blocks the opening surface 11 of the housing 1 to prevent the emergency stop button 5 from being exposed. When emergency stop operation is required, only by manually flipping the end cover 2 until the opening limiting structure 22 abuts against the opening surface 11, the end cover 2 can be in an open positioning state, will not swing randomly, and will not affect the operation of pressing the emergency stop button 5, thus improving the convenience and reliability of the emergency stop operation.

[0045] In some embodiments, the above-mentioned first connecting portion 12 and second connecting portion 21 can adopt structures such as Figure 1 , Figure 4 , Figure 8 and Figure 9 as shown, see Figure 1 ,Figure 4 , Figure 8 and Figure 9 , the axial direction of the end cover 2 is defined as the first direction; the opening limiting structure 22 is arranged on the radially outer end surface of the second connecting portion 21, and the opening limiting structure 22 extends along the inner side of the end cover 2 in the first direction. When the end cover 2 is in the normally closed state, the opening limiting structure 22 is located at the radially outer periphery of the opening surface 11.

[0046] Specifically, the first connecting portion 12 is arranged on the opening surface 11 and the outer peripheral surface, and protrudes radially outward along the housing 1. The second connecting portion 21 is arranged on the outer peripheral surface of the end cover 2, and can be integrally formed with the end cover 2 or can be separately arranged on the end cover 2. The opening limiting structure 22 is arranged on the radially outer end surface of the second connecting portion 21 and is integrally formed with the second connecting portion 21.

[0047] The opening limiting structure 22 can be regarded as a strip-shaped block structure. As Figure 10 shown, it is formed on the radially outer end surface of the second connecting portion 21 and slightly protrudes toward the inner side of the end cover 2. The abutting surface of the opening limiting structure 22 can be regarded as the inner edge portion of the radially outer end surface of the second connecting portion 21.

[0048] When the end cover 2 is in the normally closed state, the opening limiting structure 22 is located at the radially outer periphery of the opening surface 11. As Figure 6 shown, during the process of the end cover 2 being flipped from the normally closed state to the opening and positioning state, the opening limiting structure 22 passes through the outer peripheral surface of the housing 1.

[0049] Preferably, the hinged portion of the first connecting portion 12 and the second connecting portion 21 is located at the radially outer periphery of the opening surface 11. On the one hand, when the end cover 2 swings, the hinged portion will not interfere with the movement track of the opening limiting structure 22, and it is ensured that only the opening limiting structure 22 abuts against the opening surface 11, reducing the friction contact area between the radially outer end surface of the second connecting portion 21 and the opening surface 11, that is, reducing the external resistance of manually opening the end cover 2; on the other hand, the end cover 2 will not interfere with the opening surface 11.

[0050] Please refer to FIG. Figure 3 , Figure 6 and Figure 10 . On the basis of the above embodiments, the inner surface of the second connecting portion 21 has a sequentially connected abutting plane 211 and a convex arc surface 212; the abutting plane 211 is flush with the inner end surface of the end cover 2; in the first direction, the convex arc surface 212 protrudes toward the inner side of the end cover 2 relative to the opening limiting structure 22.

[0051] When the end cover 2 is in the normally closed state, the abutting plane 211 abuts against the opening surface 11, and the convex arc surface 212 is located at the radially outer periphery of the opening surface 11; when the end cover 2 is flipped, the convex arc surface 212 passes through the outer peripheral surface of the housing 1.

[0052] The inner surface of the second connecting portion 21 can be divided into two parts. One part is the abutting plane 211, which is smoothly and flush with the inner end face of the end cover 2. The other part is the outwardly convex arc surface 212. Since the outwardly convex arc surface 212 protrudes inwardly towards the end cover 2 relative to the abutting plane 211, whether the end cover 2 is opened or closed, during the flipping process of the end cover 2, the outwardly convex arc surface 212 will pass through the outer peripheral surface of the housing 1, generating rotational friction and extrusion with the housing 1, serving to prompt the operator of the rotational position of the end cover 2, especially the opening position of the end cover 2.

[0053] Preferably, referring to FIG. Figure 3 , Figure 6 and Figure 8 , the outer peripheral surface of the housing 1 has an arc-shaped transition surface 13; when flipping the end cover 2, the outwardly convex arc surface 212 passes through the arc-shaped transition surface 13.

[0054] The arc-shaped transition surface 13 can be understood as a fillet transition between the opening surface 11 and the outer peripheral surface of the housing 1. The arc-shaped transition surface 13 does not need to be provided around the entire outer periphery of the housing 1 and only needs to correspond to the second connecting portion 21 in the circumferential direction.

[0055] Both the arc-shaped transition surface 13 and the outwardly convex arc surface 212 are arc-shaped surfaces, such that when the outwardly convex arc surface 212 passes through the arc-shaped transition surface 13, the contact between the two is always a line contact, thereby reducing the mutual friction between the two and reducing wear and deformation.

[0056] In some embodiments, the above normally closed structure 3 can adopt the structures shown in Figure 3 and Figure 6 . Referring to Figure 3 and Figure 6 , the normally closed structure 3 includes a torsional elastic member. The first end of the torsional elastic member is connected to the housing 1 or the first connecting portion 12, and the second end is connected to the second connecting portion 21.

[0057] The torsional elastic member stores energy by twisting in the direction of closing the end cover 2, so that the end cover 2 is in a normally closed state. Taking Figure 3 and Figure 6 as an example, the torsional elastic member generates a clockwise torsional force. Figure 6 In

[0058] When the end cover 2 is manually flipped to open the end cover 2, the manual external force can overcome the torsional force of the torsional elastic member, so that the end cover 2 swings outward around the hinge axis. During the opening process of the end cover 2, the torsional force gradually increases. When the opening limit structure 22 abuts against the opening surface 11, the manual external force is withdrawn, and the axial abutting force between the opening limit structure 22 and the opening surface 11 can overcome the torsional force to limit the rotation of the end cover 2 and keep the end cover 2 in a stable open positioning state, as Figure 3 shown.

[0059] When the end cover 2 is manually flipped to close the end cover 2, the manual external force can overcome the axial abutting force between the opening limit structure 22 and the opening surface 11, causing them to lose contact. At the same time, the torsional elastic member releases energy and drives the end cover 2 to return to its original position.

[0060] The normally closed structure 3 uses a torsional elastic member, which has a simple structure, occupies a small space, can be assembled by means of the hinge axis, and has a stable energy storage state, thus ensuring the stability of the end cover 2 in the normally closed state.

[0061] Please refer to Figure 10 , on the basis of the above embodiment, the second connecting portion 21 has a receiving cavity 213 and a limiting groove 214 communicating with the receiving cavity 213. The torsional elastic member is located in the receiving cavity 213, and the second end of the torsional elastic member is embedded in the limiting groove 214.

[0062] The receiving cavity 213 is used to limit the torsional elastic member, which is convenient for assembling the torsional elastic member and can ensure the stability of the torsional energy storage state of the torsional elastic member. The limiting groove 214 is used to limit the second end of the torsional elastic member. The groove width of the limiting groove 214 is adapted to the end diameter of the torsional elastic member to form a clamping connection, so that the torsional elastic member is connected to the second connecting portion 21.

[0063] Preferably, the receiving cavity 213 penetrates through both ends of the second connecting portion 21, that is to say, the receiving cavity 213 is a through cavity.

[0064] In some embodiments, the above first connecting portion 12 and second connecting portion 21 may adopt structures such as Figure 1 , Figure 4 , Figure 8 and Figure 9 shown. Refer to Figure 1 , Figure 4 , Figure 8 and Figure 9 , the first connecting portion 12 includes two spaced-apart connecting lugs 121, and each connecting lug 121 extends radially outward from the housing 1; the second connecting portion 21 is provided on the outer peripheral surface of the end cover 2 and extends radially outward from the end cover 2; the second connecting portion 21 is located between the two connecting lugs 121, and the second connecting portion 21 is hinged to the two connecting lugs 121 through a rotating shaft 23. The rotating shaft 23 can be understood as the hinge axis between the second connecting portion 21 and the first connecting portion 12.

[0065] The first connection portion 12 includes two connection ears 121 , and the second connection portion 21 is located between the two connection ears 121 , which can ensure that the force of the second connection portion 21 is balanced when rotating.

[0066] In order to stabilize the state between the two connecting ears 121 and prevent relative errors, a reinforcing plate may be provided between the two connecting ears 121 . The reinforcing plate should avoid the second connecting portion 21 to avoid interference with the second connecting portion 21 .

[0067] See also Figure 3 , Figure 6 and Figure 10 On the basis of the above embodiment, the torsion elastic member is sleeved on the rotating shaft 23; a notch 215 is provided on the second connecting portion 21, and the first end of the torsion elastic member extends out of the notch 215 and is connected to the housing 1 or the first connecting portion 12.

[0068] The torsion elastic member is sleeved on the rotating shaft 23 and can be fixed and force stored by means of the rotating shaft 23, which is convenient for assembly; and the torsion elastic member and the rotating shaft 23 are simultaneously located in the accommodating cavity 213, which can save space.

[0069] The second end of the torsion elastic member extends into the limiting groove 214 and is fixed, and the first end needs to be fixed to the connecting ear 121 or the housing 1. Since the second connecting portion 21 is almost in contact with the connecting ear 121, the distance between the two is very small. In order to facilitate the fixation of the first end of the torsion elastic member, a notch 215 is provided on the second connecting portion 21, and the first end extends from the notch 215, so that the first end is fixed to the housing 1 or the connecting ear 121.

[0070] Preferably, in order to ensure that the force storage state of the torsion elastic member is stable, the first end thereof is fixed on the opening surface 11 .

[0071] In some embodiments, the housing 1 and the end cover 2 may also be connected by Figure 5 and Figure 7 The structure shown, see Figure 5 and Figure 7 A clamping structure 4 is provided between the end cover 2 and the shell 1 ; when the end cover 2 is in the normally closed state, the end cover 2 and the shell 1 are also clamped and fixed by the clamping structure 4 .

[0072] Specifically, the snap-fit ​​structure 4 includes a first snap-fit ​​41 on the housing 1 and a second snap-fit ​​42 arranged on the end cover 2 .

[0073] The first buckle 41 is arranged on the housing 1, and can be arranged on the opening surface 11, or on the outer peripheral surface. The second buckle 42 is arranged on the end cover 2, and can be located inside the end cover 2, or on the outer peripheral surface of the end cover 2. The first buckle 41 and the second buckle 42 can be fastened together and can also be separated.

[0074] Both the first buckle 41 and the second buckle 42 have hook heads, and the two hook heads are hooked to each other to form a buckle, as Figure 7 shown. Without external force, the hooking state of the second buckle 42 and the first buckle 41 can ensure the stable closing of the end cover 2. When the end cover 2 is manually pulled, the buckling force between the first buckle 41 and the second buckle 42 can be overcome, and the second buckle 42 swings with the end cover 2 and disengages from the first buckle 41.

[0075] Preferably, the second buckle 42 is arranged on the inner peripheral surface of the end cover 2, so that after the second buckle 42 is buckled with the first buckle 41, it can be blocked by the end cover 2, preventing the clamping structure 4 from being exposed outside and being collided and worn, which affects the buckling stability performance.

[0076] The first buckle 41 is arranged on the opening surface 11, rather than on the outer peripheral surface of the housing 1. That is to say, the clamping structure 4 does not occupy extra space and is integrated on the inside of the end cover 2 and the opening surface 11. Moreover, the outer diameter of the end cover 2 can be correspondingly reduced. The end cover 2 only needs to be buckled on the opening surface 11 without expanding beyond the outer peripheral surface of the housing 1, thus meeting the hinge requirement with the housing 1.

[0077] Since the clamping structure 4 is integrated on the inside of the end cover 2 and the opening surface 11, and the end cover 2 is buckled on the opening surface 11, in order to facilitate the operator to open the end cover 2 with less effort, the outer peripheral surface of the end cover 2 has an inwardly concave handle cavity, and the handle cavity and the second buckle 42 correspond to each other radially inside and outside the end cover 2.

[0078] When opening the end cover 2, the finger can be placed in the handle cavity, and then the end cover 2 is flipped with force, so as to facilitate the operator to open the end cover 2 with less effort.

[0079] Preferably, the handle cavity and the hinge part of the end cover 2 are on the same radial line of the end cover 2.

[0080] In some embodiments, the above-mentioned housing 1 can also adopt the structure as Figure 8 shown, see Figure 8 . A sleeve 14 is provided inside the housing 1, and a reinforcing rib group 15 is provided between the inner wall of the housing 1 and the outer wall of the sleeve 14; the inner cavity of the sleeve 14 forms a limiting cavity for the limit emergency stop button 5.

[0081] The limiting cavity is internally provided with a stepped surface, the outer periphery of the emergency stop button 5 abuts against the stepped surface, and one end of the emergency stop button 5 extends out of the sleeve 14, as Figure 2 and Figure 5 shown. The sleeve 14 plays a role in limiting, preventing the housing 1 from shaking greatly relative to the emergency stop button 5 and touching the button part of the emergency stop button 5.

[0082] In addition, a reinforcing rib group 15 is further provided between the outer wall of the sleeve 14 and the inner wall of the housing 1. The reinforcing rib group 15 includes a plurality of reinforcing ribs evenly distributed at intervals in the circumferential direction, and the reinforcing rib group 15 is used to enhance the overall strength of the housing 1.

[0083] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An emergency stop button protection structure, characterized in that: include: A shell (1) is used to place an emergency stop button (5); one side of the shell (1) is an opening surface (11), and a first connecting portion (12) is provided on the shell (1); The end cover (2) is provided with a second connecting portion (21), wherein the second connecting portion (21) is hingedly connected to the first connecting portion (12); a normally closed structure (3) connected between the first connection portion (12) and the second connection portion (21); and An opening limiting structure (22) is arranged on the second connecting portion (21); The normally closed structure (3) is used to control the end cover (2) to be in a normally closed state to block the opening surface (11); when the end cover (2) is turned over and the opening limit structure (22) abuts against the opening surface (11), the end cover (2) is in an open positioning state.

2. The emergency stop button protection structure according to claim 1, characterized in that: The axial direction of the end cover (2) is defined as a first direction; the opening limiting structure (22) is arranged on the radial outer end surface of the second connecting portion (21), and the opening limiting structure (22) extends along the inner side of the end cover (2) in the first direction; When the end cover (2) is in a normally closed state, the opening limit structure (22) is located at the radial periphery of the opening surface (11).

3. The emergency stop button protection structure according to claim 2, characterized in that: The inner surface of the second connecting portion (21) comprises an abutting plane (211) and an outer convex arc surface (212) which are connected in sequence; the abutting plane (211) is flush with the inner end surface of the end cover (2); in the first direction, the outer convex arc surface (212) protrudes toward the inner side of the end cover (2) relative to the abutting plane (211); When the end cover (2) is in a normally closed state, the abutment plane (211) abuts against the opening surface (11), and the outer convex arc surface (212) is located at the radial periphery of the opening surface (11); When the end cover (2) is turned over, the outer convex arc surface (212) passes through the outer peripheral surface of the shell (1).

4. The emergency stop button protection structure according to claim 3, characterized in that: The outer peripheral surface of the shell (1) has an arc-shaped transition surface (13); when the end cover (2) is turned over, the outer convex arc surface (212) passes through the arc-shaped transition surface (13).

5. The emergency stop button protection structure according to claim 1, characterized in that: The normally closed structure (3) comprises: A torsional elastic member, wherein a first end is connected to the housing (1) or the first connecting portion (12), and a second end is connected to the second connecting portion (21).

6. The emergency stop button protection structure according to claim 5, characterized in that: The second connecting portion (21) has a receiving cavity (213) and a limiting groove (214) connected to the receiving cavity (213); the torsion elastic member is located in the receiving cavity (213); and the second end of the torsion elastic member is embedded in the limiting groove (214).

7. The emergency stop button protection structure according to claim 5, characterized in that: The first connecting portion (12) comprises two spaced apart connecting ears (121), each of the connecting ears (121) extending radially outward from the housing (1); The second connecting portion (21) is arranged on the outer peripheral surface of the end cover (2) and extends radially outward from the end cover (2); the second connecting portion (21) is located between the two connecting ears (121), and the second connecting portion (21) is hinged to the two connecting ears (121) via a rotating shaft (23).

8. The emergency stop button protection structure according to claim 7, characterized in that: The torsion elastic member is sleeved on the rotating shaft (23); a notch (215) is provided on the second connecting portion (21); the first end of the torsion elastic member extends out of the notch (215) and is connected to the housing (1) or the first connecting portion (12).

9. The emergency stop button protection structure according to claim 1, characterized in that: A clamping structure (4) is provided between the end cover (2) and the housing (1); when the end cover (2) is in a normally closed state, the end cover (2) and the housing (1) are also clamped and fixed via the clamping structure (4).

10. The emergency stop button protection structure according to claim 1, characterized in that: A sleeve (14) is provided inside the shell (1), and a reinforcing rib group (15) is provided between the inner wall of the shell (1) and the outer wall of the sleeve (14); the inner cavity of the sleeve (14) forms a limiting cavity for limiting the emergency stop button (5).

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