Locking device for emergency stop switch

Abstract

The invention provides a locking device for an emergency stop switch, the locking device comprises a shell assembly, a first locking assembly and a second locking assembly, the shell assembly comprises a base and a top seat, the base and the top seat are detachably connected, a locking cavity is defined by the base and the top seat, the emergency stop switch is arranged in the locking cavity, and the first locking assembly and the second locking assembly are arranged in the locking cavity. The first locking assembly and the second locking assembly are both connected with the shell assembly, the first locking assembly comprises a first locking part, the emergency stop switch is arranged in the locking cavity, and at least part of the first locking part abuts against the emergency stop switch so as to prevent a rotary knob of the emergency stop switch from rotating; the second locking assembly comprises a second locking part, and at least part of the second locking part is arranged below a knob of the emergency stop switch so as to prevent the knob of the emergency stop switch from moving. The locking device for the emergency stop switch has the advantages of being convenient to install and good in mistaken touch prevention effect.

Description

Technical Field

[0001] The invention relates to the technical field of emergency stop switches, and in particular to a locking device for an emergency stop switch. Background Art

[0002] When the emergency stop switch is in the emergency stop state, the emergency stop button is pressed to close the switch, causing the equipment to be forced to stop. If the on-site personnel do not unlock the emergency stop switch, the equipment will remain in the forced stop state.

[0003] In the related art, the locking device of the emergency stop switch generally adopts an acrylic transparent cover. Since acrylic itself is brittle and easily damaged, and the padlock part of the locking device is easily broken, the emergency stop switch is easily exposed, and the risk of accidental touch is high. In addition, when the locking device is hit by external force, it is easy to cause the emergency stop switch to rotate, thereby causing the emergency stop switch to be unlocked, and in serious cases, it may cause production accidents. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, an embodiment of the present invention provides a locking device for an emergency stop switch, which is easy to install and has a good anti-mistouch effect.

[0005] The locking device for the emergency stop switch according to the embodiment of the present invention comprises:

[0006] A housing assembly, the housing assembly comprising a base and a top seat, the base and the top seat are detachably connected, the base and the top seat enclose a locking cavity, and the emergency stop switch is disposed in the locking cavity;

[0007] a first locking assembly and a second locking assembly, wherein the first locking assembly and the second locking assembly are both connected to the housing assembly, the first locking assembly comprises a first locking portion, the emergency stop switch is disposed in the locking cavity, at least a portion of the first locking portion abuts against the emergency stop switch to prevent the knob of the emergency stop switch from rotating,

[0008] The second locking assembly includes a second locking portion, at least a portion of which is disposed below the knob of the emergency stop switch to prevent the knob of the emergency stop switch from moving.

[0009] The locking device for the emergency stop switch of the embodiment of the present invention can use the first locking component and the second locking component to restrict the emergency stop switch, so that the emergency stop switch is prevented from rotating and moving when it is in a closed state, thereby reducing the risk of accidental touch of the emergency stop switch. In addition, the base and the top seat are arranged in the circumferential direction of the emergency stop switch, thereby improving the protection of the emergency stop switch and reducing the possibility of emergency stop failure caused by external impact on the emergency stop switch.

[0010] In some embodiments, the first locking portion includes an extension section and an abutment section connected in sequence, the extension direction of the extension section is consistent with the height direction of the emergency stop switch, the extension section is connected to the top seat, and the abutment section is provided with an abutment interface facing the side of the emergency stop switch, and the side wall of the abutment interface is provided with anti-slip grooves, the emergency stop switch is placed in the locking cavity, and at least a portion of the knob of the emergency stop switch is placed in the abutment interface and in contact with the anti-slip grooves.

[0011] In some embodiments, the first locking portion further includes an elastic member connected between the extension section and the top seat.

[0012] In some embodiments, the second locking portion includes a rotating member, which is connected to the base and rotatable around a first axial direction.

[0013] In some embodiments, the second locking portion further includes a rotating shaft and a torsion spring, the rotating shaft is connected to the base, and the axial direction of the rotating shaft coincides with the first axial direction, the torsion spring is sleeved on the rotating shaft, and the torsion arms of the torsion spring are respectively against the rotating member and the base.

[0014] In some embodiments, there are multiple second locking portions, and the multiple second locking portions are arranged relatively along the width direction of the emergency stop switch.

[0015] In some embodiments, the base includes a first sub-base and a second sub-base, the first sub-base and the second sub-base are arranged opposite to each other in the width direction of the emergency stop switch, and both the first sub-base and the second sub-base are provided with mounting threaded holes.

[0016] In some embodiments, the top seat includes a curved side wall, the curved side wall protrudes toward a side away from the base, and the curved side wall is smoothly connected to the base.

[0017] In some embodiments, the arcuate side wall and the base are both provided with fixing threaded holes so that the arcuate side wall and the base are connected with each other by bolts.

[0018] In some embodiments, the top seat also includes a reinforcing rib, which is connected to the curved side wall and is located on a side of the curved side wall adjacent to the base. There are multiple reinforcing ribs, and the multiple reinforcing ribs are arranged at intervals in the height direction of the emergency stop switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a locking device for an emergency stop switch according to an embodiment of the present invention.

[0020] Figure 2It is a partial structural schematic diagram of a locking device for an emergency stop switch according to an embodiment of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of a locking device for an emergency stop switch according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 100, emergency stop switch, 200, knob,

[0024] 1. Shell assembly, 11. Base, 12. Top seat, 121. Arc side wall, 122. Fixing threaded hole, 123. Reinforcement rib,

[0025] 2. first locking assembly, 21. first locking portion, 211. extension section, 212. abutting section, 2121. anti-slip pattern, 213. elastic member,

[0026] 3. Second locking assembly, 31. Rotating member, 32. Rotating shaft, 33. Torsion spring, 34. First sub-seat, 35. Second sub-seat, 36. Mounting threaded hole. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] like Figure 1-Figure 3 As shown, the locking device for the emergency stop switch of the embodiment of the present invention comprises: a housing component 1, a first locking component

[0029] 2 and the second locking assembly 3,

[0030] The housing assembly 1 includes a base 11 and a top seat 12, the base 11 and the top seat 12 are detachably connected, the base 11 and the top seat 12 enclose a locking cavity, and the emergency stop switch 100 is placed in the locking cavity. First locking assembly

[0031] 2 and the second locking assembly 3 are both connected to the housing assembly 1. The first locking assembly

[0032] 2 comprises a first locking portion 21, the emergency stop switch 100 is placed in the locking cavity, at least a portion of the first locking portion 21 abuts against the emergency stop switch 100 to prevent the knob 200 of the emergency stop switch 100 from rotating, and the second locking assembly 3 comprises a second locking portion, at least a portion of the second locking portion is placed under the knob 200 of the emergency stop switch 100 to prevent the knob 200 of the emergency stop switch 100 from moving.

[0033] Specifically, Figure 1As shown, the top seat 12 is located above the base 11, and the base 11 and the top seat 12 can be detachably connected by bolts or screws, etc. The side walls of the top seat 12 and the base 11 form a locking cavity, so that the emergency stop switch 100 is placed in the locking cavity.

[0034] It is understandable that if Figure 1 and Figure 2 As shown, the first locking portion 21 is located above the emergency stop switch 100, and the lower end of the first locking portion 21 can abut against the upper end of the knob 200 of the emergency stop switch 100, so that the friction between the first locking portion 21 and the knob 200 is increased, thereby effectively preventing the knob 200 from rotating relative to the first locking portion 21. One end of the second locking portion can be clamped in the gap between the knob 200 and the lower part of the emergency stop switch 100, so that the knob 200 cannot move in the up and down direction.

[0035] That is to say, the locking device for the emergency stop switch according to the embodiment of the present invention can utilize the first locking component

[0036] 2 and the second locking assembly 3 restrict the emergency stop switch 100 so that the emergency stop switch 100 is prevented from rotating and moving when in a closed state, thereby reducing the risk of accidental touch of the emergency stop switch 100. In addition, the base 11 and the top seat 12 are arranged in the circumferential direction of the emergency stop switch 100, thereby improving the protection of the emergency stop switch 100 and reducing the possibility of emergency stop failure caused by external impact on the emergency stop switch 100.

[0037] In some embodiments, the first locking portion 21 includes an extension section 211 and an abutment section 212 connected in sequence, the extension direction of the extension section 211 is consistent with the height direction of the emergency stop switch 100, the extension section 211 is connected to the top seat 12, and the abutment section 212 is provided with an abutment interface facing the side of the emergency stop switch 100, and the side wall of the abutment interface is provided with an anti-slip pattern 2121. The emergency stop switch 100 is placed in the locking cavity, and at least a portion of the knob 200 of the emergency stop switch 100 is placed in the abutment interface and in contact with the anti-slip pattern 2121.

[0038] Specifically, Figure 1 and Figure 2 As shown, the extension section 211 is connected between the abutment section 212 and the top seat 12, the abutment interface is located at the lower end of the abutment section 212, and the inner wall surface of the abutment interface is provided with anti-slip grooves 2121 so that the upper end of the knob 200 of the emergency stop switch 100 can contact the anti-slip grooves 2121.

[0039] Preferably, the anti-slip pattern 2121 can be made of rubber material, which can not only increase the friction between the knob 200 and the anti-slip pattern 2121, but also avoid damage to the knob 200 due to excessive squeezing between the knob 200 and the anti-slip pattern 2121.

[0040] Optionally, the first locking portion 21 further includes an elastic member 213, and the elastic member 213 is connected between the extension section 211 and the top seat 12. Figure 1 and Figure 2 As shown, a connecting rod is provided at the lower end of the extension section 211, and the elastic member 213 can be a spiral elastic member so as to be mounted on the connecting rod. When the abutting section 212 abuts against the knob 200, the abutting section 212 can ensure contact with the knob 200 under the elastic force of the elastic member 213, further preventing the knob 200 from rotating relative to the abutting section 212, thereby reducing the risk of accidental touch.

[0041] In some embodiments, the second locking portion includes a rotating member 31 , which is connected to the base 11 and rotatable around a first axial direction.

[0042] Specifically, Figure 1-Figure 3 As shown, the first locking member abuts against the knob 200 , and the second locking member is inserted into the gap below the knob 200 , so that the knob 200 cannot move in the up and down directions, thereby reducing the risk of accidental touch of the emergency stop switch 100 .

[0043] In addition, the rotating member 31 is rotatably connected to the base 11, and when the abutting portion abuts against the knob 200, there is a movement margin between the knob 200 and the rotating member 31, so that during the installation process, the rotating member 31 can rotate a certain angle so that it can be more conveniently inserted into the gap below the knob 200.

[0044] In some embodiments, the second locking portion also includes a rotating shaft 32 and a torsion spring 33. The rotating shaft 32 is connected to the base 11, and the axial direction of the rotating shaft 32 coincides with the first axial direction. The torsion spring 33 is sleeved on the rotating shaft 32, and the torsion arms of the torsion spring 33 are respectively against the rotating member 31 and the base 11.

[0045] Specifically, Figure 1-Figure 3 As shown, the extending direction of the rotating shaft 32 is consistent with the front-rear direction, and the rotating member 31 is installed on the rotating shaft 32 and can rotate around the circumference of the rotating shaft 32. The torsion spring 33 is sleeved on the rotating shaft 32, and the torsion spring 33 can limit the rotating member 31 from rotating obliquely downward.

[0046] It is understandable that if Figure 1-Figure 3 As shown, a torsion spring 33 is installed on the rotating shaft 32, so that the rotating member 31 can maintain a horizontal state under the elastic force of the torsion spring 33, so that one end of the rotating member 31 can be stably inserted into the gap below the knob 200, and when the rotating member 31 is squeezed by the knob 200, the rotating member 31 can rotate obliquely downward at a large angle under the action of the torsion spring 33.

[0047] Preferably, there are multiple second locking portions, and the multiple second locking portions are arranged relatively along the width direction of the emergency stop switch 100. Figure 1 and Figure 2 As shown, there are two second locking parts, which are arranged opposite to each other in the left-right direction to increase the contact area between the rotating member 31 and the knob 200, and can also make the forces on both sides of the knob 200 more balanced during the squeezing process, thereby reducing the possibility of damage to the knob 200.

[0048] In some embodiments, the base 11 includes a first sub-base 34 and a second sub-base 35, and the first sub-base 34 and the second sub-base 35 are arranged in a width direction (such as Figure 1 The first sub-base 34 and the second sub-base 35 are arranged relatively to each other in the left-right direction (in the right and left direction), and mounting threaded holes 36 are provided on both the first sub-base 34 and the second sub-base 35.

[0049] Specifically, Figure 1-Figure 3 As shown, the first sub-base 34 and the second sub-base 35 are respectively located on the left and right sides of the emergency stop switch 100. The bottoms of the first sub-base 34 and the second sub-base 35 are both provided with mounting threaded holes 36 so as to be connected to the equipment mounted with the emergency stop switch 100 by bolts or screws, thereby realizing the protection function of the surrounding side of the emergency stop switch 100.

[0050] It is understandable that there can be multiple first sub-seats 34 and multiple second sub-seats 35, and multiple first sub-seats 34 and multiple second sub-seats 35 can be arranged around the emergency stop switch 100 so as to fully surround the emergency stop switch 100 and prevent the emergency stop switch 100 from being dragged and hit by the outside world.

[0051] When in use, the second locking member is arranged on the base 11. The base 11 can be first moved toward the emergency stop switch 100 along the front-to-back direction, and the rotating member 31 can be rotated according to the position of the knob 200 of the emergency stop switch 100, so that one end of the rotating member 31 can be inserted into the gap below the knob 200. After fixing the base 11 with bolts, the top seat 12 is installed on the base 11. At the same time, the abutting part needs to be in contact with the knob 200 to ensure that the knob 200 cannot be rotated.

[0052] Thus, the first locking member and the second locking member are used to realize the locking function of the emergency stop switch 100, and the protection of the top seat 12 and the base 11 is used to reduce the impact of the emergency stop switch 100 on the outside, thereby reducing the possibility of damage to the emergency stop switch 100.

[0053] In some embodiments, the top seat 12 includes a curved side wall 121 , the curved side wall 121 protrudes toward a side away from the base 11 , and the curved side wall 121 is smoothly connected to the base 11 .

[0054] Specifically, Figure 1-Figure 3As shown, the lower end of the arc-shaped side wall 121 is connected to the upper end of the base 11, and the outer side wall of the arc-shaped side wall 121 is flush with the outer side wall of the base 11, thereby avoiding the generation of sharp edges between the base 11 and the top seat 12 and reducing damage caused by impact objects.

[0055] It can be understood that the top seat 12 often adopts the structure of the arc-shaped side wall 121, which can increase the installation space of the locking cavity, and also prevent external impact objects from being hooked with the locking device for the emergency stop switch of the embodiment of the present invention, further reducing the possibility of secondary collision between the external impact objects and the locking device, and improving the overall stability of the locking device.

[0056] In some embodiments, the arcuate side wall 121 and the base 11 are both provided with fixing threaded holes 122, so that the arcuate side wall 121 and the base 11 are connected by bolts. As shown in the figure, the fixing threaded holes 122 on the arcuate side wall 121 are arranged through the arcuate side wall 121, so that when the upper end of the base 11 is connected to the arcuate side wall 121, the screws used for connection can be hidden in the fixing threaded holes 122 on the arcuate side wall 121, so as to reduce the possibility of the impact object and the locking device being hooked.

[0057] In some embodiments, the top seat 12 also includes a reinforcing rib 123, which is connected to the arcuate side wall 121 and is located on a side of the arcuate side wall 121 adjacent to the base 11. There are multiple reinforcing ribs 123, and the multiple reinforcing ribs 123 are arranged at intervals in the height direction of the emergency stop switch 100.

[0058] Specifically, Figure 1 and Figure 3 As shown, the reinforcing ribs 123 extend in the left-right direction, and a plurality of reinforcing ribs 123 are respectively arranged at the front and rear sides of the first locking member to enhance the overall strength of the locking device.

[0059] It can be understood that since the top seat 12 adopts an arc-shaped side wall 121 structure, it is easy for an external impactor to collide with the top seat 12, which in turn causes the impactor to squeeze the top seat 12 from the side. Therefore, a plurality of reinforcing ribs 123 are arranged in the transverse direction of the top seat 12 to increase the strength of the top seat 12 and reduce the possibility of damage to the top seat 12 caused by the impact of the impactor.

[0060] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "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 higher in level than the second feature. A first feature being "below", "below" or "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 lower in level than the second feature.

[0064] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A locking device for an emergency stop switch, characterized in that: include: A housing assembly, the housing assembly comprising a base and a top seat, the base and the top seat are detachably connected, the base and the top seat enclose a locking cavity, and the emergency stop switch is disposed in the locking cavity; a first locking assembly and a second locking assembly, wherein the first locking assembly and the second locking assembly are both connected to the housing assembly, the first locking assembly comprises a first locking portion, the emergency stop switch is disposed in the locking cavity, at least a portion of the first locking portion abuts against the emergency stop switch to prevent the knob of the emergency stop switch from rotating, The second locking assembly includes a second locking portion, at least a portion of which is disposed below the knob of the emergency stop switch to prevent the knob of the emergency stop switch from moving.

2. The locking device for the emergency stop switch according to claim 1, characterized in that: The first locking portion includes an extension section and an abutment section connected in sequence, the extension direction of the extension section is consistent with the height direction of the emergency stop switch, the extension section is connected to the top seat, the abutment section is provided with an abutment interface facing the side of the emergency stop switch, the side wall of the abutment interface is provided with anti-slip texture, the emergency stop switch is placed in the locking cavity, and at least a portion of the knob of the emergency stop switch is placed in the abutment interface and in contact with the anti-slip texture.

3. The locking device for the emergency stop switch according to claim 2, characterized in that: The first locking portion further includes an elastic member connected between the extension section and the top seat.

4. The locking device for the emergency stop switch according to claim 1, characterized in that: The second locking portion includes a rotating member, and the rotating member is connected to the base and is rotatable around a first axial direction.

5. The locking device for the emergency stop switch according to claim 4, characterized in that: The second locking portion further includes a rotating shaft and a torsion spring, wherein the rotating shaft is connected to the base, and the axial direction of the rotating shaft coincides with the first axial direction, the torsion spring is sleeved on the rotating shaft, and the torsion arms of the torsion spring are respectively against the rotating member and the base.

6. The locking device for the emergency stop switch according to claim 5, characterized in that: There are a plurality of the second locking portions, and the plurality of the second locking portions are arranged opposite to each other along the width direction of the emergency stop switch.

7. The locking device for the emergency stop switch according to claim 6, characterized in that: The base includes a first sub-base and a second sub-base, the first sub-base and the second sub-base are arranged opposite to each other in the width direction of the emergency stop switch, and the first sub-base and the second sub-base are both provided with mounting threaded holes.

8. The locking device for an emergency stop switch according to any one of claims 1 to 7, characterized in that: The top seat comprises an arc-shaped side wall, the arc-shaped side wall protrudes toward a side away from the base, and the arc-shaped side wall is smoothly connected to the base.

9. The locking device for the emergency stop switch according to claim 8, characterized in that: The arc-shaped side wall and the base are both provided with fixing threaded holes so that the arc-shaped side wall and the base are connected with each other by bolts.

10. The locking device for the emergency stop switch according to claim 9, characterized in that: The top seat also includes a reinforcing rib, which is connected to the arc-shaped side wall and is located on a side of the arc-shaped side wall adjacent to the base. There are multiple reinforcing ribs, and the multiple reinforcing ribs are arranged at intervals in the height direction of the emergency stop switch.

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