Switch box with locking device

Abstract

The utility model discloses a switch box with locking device, include: bottom shell, the upper cover is formed with accommodating cavity with bottom shell cooperation, and the edge wall of accommodating cavity is equipped with through -hole, the upper cover is equipped with the surface of pressing and the through slot to bottom shell one side, and the rotary switch is contained in accommodating cavity, and the knob is cooperated with knob switch, and the knob is equipped with locking hole and spacing block, and the sliding block is equipped with locking portion, and the elastic member contains in accommodating cavity, and the elastic member gives the elastic force of sliding block to the movement of upper cover, first state, the upper cover is separated with bottom shell, and locking portion and locking hole lock cooperation, second state, the upper cover is spliced with bottom shell, and the surface of pressing drives the sliding block to move to bottom shell, and locking portion and locking hole remove the lock, third state, the knob rotates, and the spacing block rotates to the locking in through slot, adopt above -mentioned structure, through the cooperation between multiple structures, form the effect of protection locking, and the whole part is few, and simple structure, convenient to assemble, and the operation lock is reliable, guarantees the safety of personnel.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to a switch box with a locking device. Background Technology

[0002] To improve the protection level of rotary switches, in the prior art, rotary switches are usually installed inside a switch box, and a knob installed outside the switch box is connected to the rotary switch via a rotating shaft. Rotating the knob controls the switching on and off of the rotary switch.

[0003] In existing switch boxes, when the rotary switch is energized (closed state), the operator (or other personnel) can still open the cover of the switch box; or, after the cover of the switch box is opened, the operator (or other personnel) can still turn the knob to turn the rotary switch on (closed state). All of the above operations are live operations and pose significant safety hazards. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to provide a switch box with a locking device to prevent operators (or other personnel) from operating the rotary switch while it is powered on. A switch box with a locking device includes:

[0005] Bottom shell;

[0006] The upper cover, which cooperates with the bottom shell to form a receiving cavity, has through holes on its side walls; the upper cover has a pressing surface and a through groove on the side facing the bottom shell.

[0007] A rotary switch, wherein the rotary switch is housed in the receiving cavity;

[0008] A knob, the knob portion being located outside the side wall of the receiving cavity, the remaining portion of the knob extending through the through hole into the receiving cavity and cooperating with the knob switch; the portion of the knob located inside the receiving cavity is provided with a locking hole and a limiting block;

[0009] A slider, wherein the slider is housed in the receiving cavity, and the slider is provided with a locking part;

[0010] An elastic element is housed in the receiving cavity and provides an elastic force to the slider as it moves toward the upper cover.

[0011] In the first state, the upper cover is separated from the bottom shell, and the locking part is locked in place with the locking hole;

[0012] In the second state, the upper cover is spliced ​​with the bottom shell, the pressing surface drives the slider to move toward the bottom shell, and the locking part is unlocked from the locking hole;

[0013] In the third state, the knob is rotated, and the limiting block rotates into the through slot and locks in place.

[0014] The knob includes a column, and the locking hole and the limiting block are disposed on the column.

[0015] It also includes a retaining spring, wherein the column is provided with a retaining groove, and the retaining spring engages with the retaining groove.

[0016] The top cover is also provided with a pressing surface, which abuts against the column.

[0017] The bottom shell is provided with a groove, the slider is partially embedded in the groove, one end of the elastic element abuts against the slider, and the other end of the elastic element abuts against the bottom surface of the groove.

[0018] A guide structure is provided between the slider and the sidewall of the groove, and the slider slides along the guide structure.

[0019] The slider includes an extension that is connected to the locking part. The extension extends toward the upper cover and the top surface of the extension abuts against the pressing surface.

[0020] The slider has a bottom groove, which opens towards the bottom surface of the groove, and one end of the elastic element extends into the bottom groove.

[0021] The upper cover is provided with a protrusion, which is adjacent to the through groove. The protrusion has a limiting surface on the side facing the through groove. When the limiting block rotates into the through groove, the limiting surface abuts against the limiting block.

[0022] The through hole is provided in the bottom shell; or, the through hole is provided in the top cover; or, a portion of the through hole is provided in the bottom shell, and the remaining portion of the through hole is provided in the top cover.

[0023] The technical solution of this utility model has the following advantages:

[0024] 1. This utility model provides a switch box with a locking device. In the first state, when the top cover is open, the locking part engages with the locking hole to form a locking engagement between the slider and the knob, preventing the knob from rotating and thus preventing the switch from closing. In the second state, the top cover and the bottom shell are joined, and the rotary switch is in the open state. The top cover drives the slider to slide downwards, releasing the lock between the slider and the knob, allowing the knob to rotate and enabling the rotary switch to close or open. In the third state, the rotary switch is in the closed state, and the limit block rotates into the through slot, forming a lock in the vertical direction, preventing the top cover from opening. This structure, through the cooperation of multiple components, achieves a protective locking effect. It has fewer parts, a simple structure, is easy to assemble, provides reliable operation and locking, and ensures personnel safety.

[0025] 2. This utility model provides a switch box with a locking device. The column design better achieves a better installation and fit effect. Here, the column extends through the through hole into the receiving cavity. In addition, an external locking structure can also be used to form a locking effect.

[0026] 3. The switch box with locking device provided by this utility model has a snap ring, which forms a fixed installation effect on the knob and prevents the knob from falling off during use.

[0027] 4. The switch box with a locking device provided by this utility model has a limiting effect on the pressing surface, making the knob rotation more stable.

[0028] 5. The present invention provides a switch box with a locking device, the groove design of which makes the installation of the slider more convenient.

[0029] 6. This utility model provides a switch box with a locking device. The guide structure creates a guiding effect, making the slider slide more stably. Here, the side wall of the groove is provided with a first limiting rib, and the slider is provided with a second limiting rib. The first limiting rib cooperates with the side wall of the groove to form a first limiting groove. The second limiting rib is embedded in the first limiting groove and slides relative to the first limiting rib, thus limiting the slider in the horizontal direction, so that the slider can only slide up and down.

[0030] 7. The present invention provides a switch box with a locking device. The bottom groove is designed to fix the elastic element and improve the stability of the elastic force of the elastic element. Here, the elastic element can be a spring.

[0031] 8. The present invention provides a switch box with a locking device. The cooperation of the protrusion improves the limiting and locking effect, so that the knob and the top cover can better cooperate and lock. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 Exploded view of a switch box with a locking device provided by this utility model;

[0034] Figure 2 A cross-sectional view of the first state provided by this utility model;

[0035] Figure 3 A cross-sectional view of the second state provided by this utility model;

[0036] Figure 4 A cross-sectional view of the third state provided by this utility model;

[0037] Figure 5 A cross-sectional view from another angle for the third state provided by this utility model;

[0038] Figure 6 A schematic diagram of the bottom shell provided by this utility model;

[0039] Figure 7 A schematic diagram of the structure of the base shell and knob assembly provided by this utility model;

[0040] Figure 8 A schematic diagram of the structure of the top cover provided by this utility model;

[0041] Figure 9 A schematic diagram of the structure of the knob provided by this utility model;

[0042] Figure 10 A schematic diagram of the slider provided by this utility model.

[0043] Explanation of reference numerals in the attached figures:

[0044] 11. Bottom shell; 12. Top cover; 13. Knob; 14. Rotary switch; 15. Shaft; 16. Slider; 17. Elastic element; 18. Snap ring; 111. Receiving cavity; 112. Through hole; 113. Groove; 114. First limiting rib; 115. First limiting groove; 121. Pressing surface; 122. Through groove; 123. Pressing surface; 124. Protrusion; 125. Extension; 131. Locking hole; 132. Limiting block; 133. Column; 134. Snap groove; 161. Locking part; 162. Second limiting rib; 163. Extension; 164. Bottom groove. Detailed Implementation

[0045] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0049] Example 1

[0050] This embodiment provides a switch box with a locking device, as shown in the attached figure. Figures 1-10 As shown, it includes:

[0051] Bottom shell 11.

[0052] The upper cover 12 is located above the bottom shell 11, and the upper cover 12 and the bottom shell 11 cooperate to form a receiving cavity 111. The side wall of the receiving cavity 111 is provided with a through hole 112, which is used to cooperate with the knob 13. The upper cover 12 has a pressing surface 121 and a through groove 122 on the side facing the bottom shell 11.

[0053] Rotary switch 14 is housed in receiving cavity 111. Rotary switch 14 is a prior art device. Rotary switch 14 is fixed in receiving cavity 111. Rotary switch 14 is connected to knob 13 through rotating shaft 15. That is to say, when knob 13 is rotated, rotary switch 14 also rotates, realizing the effect of opening and closing of rotary switch 14.

[0054] The knob 13 is located outside the side wall of the receiving cavity 111, that is, outside the switch box. The rest of the knob 13 extends through the through hole 112 into the receiving cavity 111 and cooperates with the knob 13 switch. Here, the rest of the knob 13 achieves a linkage effect with the knob 13 switch through the rotating shaft 15. The part of the knob 13 located in the receiving cavity 111 is provided with a locking hole 131 and a limiting block 132.

[0055] Slider 16 is housed in receiving cavity 111 and has locking part 161.

[0056] The elastic element 17 is housed in the receiving cavity 111. The elastic element 17 provides an elastic force to the slider 16 to move toward the upper cover 12. In the normal state, the elastic element 17 will drive the slider 16 to move toward the upper cover 12, that is, the slider 16 slides upward. When a force is applied to the slider 16, causing the slider 16 to slide downward, the elastic element 17 contracts to store energy.

[0057] In the first state, the upper cover 12 is separated from the bottom shell 11, that is, when the upper cover 12 is open, the locking part 161 engages with the locking hole 131 to form a locking engagement between the slider 16 and the knob 13, preventing the knob 13 from rotating. In other words, the closing operation cannot be performed in this state. In this state, the rotary switch 14 is in the open state, and the knob 13 is also in the open position, forming a locking effect between the slider 16 and the knob 13.

[0058] In the second state, the upper cover 12 is spliced ​​with the bottom shell 11. At this time, the rotary switch 14 is in the open state, and the knob 13 is not turned. During the cooperation between the upper cover 12 and the bottom shell 11, the upper cover 12 drives the slider 16 to slide downward. Specifically, the pressing surface 121 drives the slider 16 to move towards the bottom shell 11. The locking part 161 and the locking hole 131 are unlocked, which is equivalent to releasing the lock between the slider 16 and the knob 13. After the upper cover 12 and the bottom shell 11 are completely fixed, the knob 13 can be rotated, and the opening and closing operations can be performed.

[0059] The third state is based on the second state, where the upper cover 12 and the bottom shell 11 are joined. In this state, the knob 13 can be rotated. When the knob 13 rotates, the limit block 132 rotates into the through slot 122 and locks. When the knob 13 is in the closed position, the limit block 132 also rotates into the channel and locks. At this point, the knob 13 and the upper cover 12 are locked vertically, preventing the upper cover 12 from opening. The upper cover 12 can only be opened when the knob 13 is in the open position. It should also be noted that when the upper cover 12 is open, the slider 16, under the action of the elastic element 17, also locks with the knob 13, restricting the rotation of the knob 13. Using the above structure, through the cooperation of multiple structures, a protective locking effect is achieved. The overall structure has fewer parts, is simple, easy to assemble, and provides reliable operation and locking, ensuring personnel safety.

[0060] Specifically, as shown in the attached document Figure 9 As shown, the knob 13 includes a column 133, a locking hole 131, and a limiting block 132 disposed on the column 133. The locking hole 131 is located near the top of the column 133, and its shape is adapted to the shape of the locking part 161. For example, it can be a right-angled triangle, a square, or an irregular shape, which can be adjusted according to actual needs by those skilled in the art. The limiting block 132 is located at the top of the column 133, that is, on the side of the knob 13 near the rotary switch 14. Specifically, the limiting block 132 has an arc-shaped structure. The column 133 provides a better installation fit, extending through the through hole 112 into the receiving cavity 111. Alternatively, an external locking structure can be used to achieve a locking effect.

[0061] Specifically, as shown in the attached document Figure 1 , Figure 7 As shown, it also includes a retaining spring 18, and a retaining groove 134 is provided on the column 133, with the retaining spring 18 engaging with the retaining groove 134. The retaining spring 18 provides a secure mounting effect for the knob 13, preventing it from falling off during use. Here, the retaining spring 18 is located within the receiving cavity 111, and the cross-sectional area of ​​the retaining spring 18 is larger than the cross-sectional area of ​​the column 133, that is, the cross-sectional area of ​​the retaining spring 18 is larger than the area of ​​the through hole 112. After the retaining spring 18 is installed, the knob 13 cannot be separated from the switch box.

[0062] Specifically, the shaft 15 is connected to the column 133 to form a transmission effect between the two.

[0063] Specifically, as shown in the attached document Figures 1-10As shown, the upper cover 12 is also provided with a pressing surface 123, which abuts against the column 133. The pressing surface 123 serves as a limiting effect, making the knob 13 rotate more smoothly. It should be noted that the pressing surface 123 is also curved, and the pressing surface 123 only fits against the column 133, while the column 133 can rotate relative to the pressing surface 123.

[0064] Specifically, the bottom shell 11 is provided with a groove 113, the slider 16 is partially embedded in the groove 113, one end of the elastic member 17 abuts against the slider 16, and the other end of the elastic member 17 abuts against the bottom surface of the groove 113. The groove 113 makes it easier to install the slider 16.

[0065] Specifically, as shown in the attached document Figures 1-10 As shown, a guide structure is provided between the slider 16 and the side wall of the groove 113, and the slider 16 slides along the guide structure. The guide structure provides a guiding effect, making the slider 16 slide more stably. Here, the side wall of the groove 113 is provided with a first limiting rib 114, and the slider 16 is provided with a second limiting rib 162. The first limiting rib 114 and the side wall of the groove 113 cooperate to form a first limiting groove 115. The second limiting rib 162 is embedded in the first limiting groove 115 and slides relative to the first limiting rib 114, thus limiting the slider 16 in the horizontal direction, so that the slider 16 can only slide up and down.

[0066] Specifically, as shown in the attached document Figure 10 As shown, the slider 16 includes an extension 163, which is connected to the locking part 161. The extension 163 extends toward the upper cover 12, and its top surface abuts against the pressing surface 121. Here, the top surface of the extension 163 is higher than the top surface of the locking part 161.

[0067] Specifically, as shown in the attached document Figures 1-10 As shown, the slider 16 has a bottom groove 164, which opens towards the bottom surface of the groove 113. One end of the elastic element 17 extends into the bottom groove 164. The bottom groove 164 serves to fix the elastic element 17 and improve the stability of its elastic force. Here, the elastic element 17 can be a spring. Furthermore, positioning posts can also be provided in the bottom groove 164 and on the bottom surface of the groove 113. One end of the elastic element 17 is fitted into one of the positioning posts, and the other end is fitted into the other positioning post, forming a positioning and guiding effect, further improving the stability of the elastic element 17.

[0068] Specifically, as shown in the attached document Figures 1-10As shown, the upper cover 12 is provided with a protrusion 124, which is adjacent to the through groove 122. The protrusion 124 has a limiting surface facing the through groove 122. When the limiting block 132 rotates into the through groove 122, the limiting surface abuts against the limiting block 132. The engagement of the protrusion 124 improves the limiting and locking effect, allowing the knob 13 and the upper cover 12 to better lock together. The protrusion 124 increases the contact area with the limiting block 132. Here, the bottom surface of the protrusion 124 is also part of the pressing surface 123.

[0069] Specifically, the upper cover 12 has an extension 125 on the side facing the bottom shell 11, and the pressing surface 121, the through groove 122, the pressing surface 123, and the protrusion 124 are all provided on the extension 125. Here, the extension 125 and the upper cover 12 are integrally formed.

[0070] Specifically, the through hole 112 is provided on the bottom shell 11. Alternatively, the through hole 112 is provided on the top cover 12. Alternatively, part of the through hole 112 is provided on the bottom shell 11, and the rest of the through hole 112 is provided on the top cover 12. The position of the through hole 112 can be adjusted according to actual needs. In this embodiment, the through hole 112 being provided on the bottom shell 11 is described as an example.

[0071] Specifically, the part of knob 13 located outside the switch box is a handle structure, which can be rotated by the operator.

[0072] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A switch box with a locking device, characterized in that, include: Bottom shell (11); The upper cover (12) and the bottom shell (11) cooperate to form a receiving cavity (111), and the side wall of the receiving cavity (111) is provided with a through hole (112); the upper cover (12) is provided with a pressing surface (121) and a through groove (122) on the side facing the bottom shell (11); A rotary switch (14) is housed in the receiving cavity (111); A knob (13) is located outside the side wall of the receiving cavity (111), and the remaining part of the knob (13) extends through the through hole (112) into the receiving cavity (111) and cooperates with the knob (13) switch; the part of the knob (13) located in the receiving cavity (111) is provided with a locking hole (131) and a limiting block (132); A slider (16) is housed in the receiving cavity (111), and the slider (16) is provided with a locking part (161); An elastic element (17) is housed in the receiving cavity (111) and provides an elastic force to the slider (16) to move toward the upper cover (12); In the first state, the upper cover (12) is separated from the bottom shell (11), and the locking part (161) is locked in place with the locking hole (131); In the second state, the upper cover (12) is spliced ​​with the bottom shell (11), the pressing surface (121) drives the slider (16) to move toward the bottom shell (11), and the locking part (161) and the locking hole (131) are unlocked; In the third state, the knob (13) rotates, and the limiting block (132) rotates into the through groove (122) and locks.

2. The switch box with locking device according to claim 1, characterized in that, The knob (13) includes a column (133), and the locking hole (131) and the limiting block (132) are disposed on the column.

3. The switch box with locking device according to claim 2, characterized in that, It also includes a retaining ring (18), and the column (133) is provided with a retaining groove (134), and the retaining ring (18) cooperates with the retaining groove (134).

4. The switch box with locking device according to claim 2, characterized in that, The upper cover (12) is also provided with a pressing surface (123), which abuts against the column (133).

5. The switch box with locking device according to claim 1, characterized in that, The bottom shell (11) is provided with a groove (113), the slider (16) is partially embedded in the groove (113), one end of the elastic member (17) abuts against the slider (16), and the other end of the elastic member (17) abuts against the bottom surface of the groove (113).

6. The switch box with locking device according to claim 5, characterized in that, A guide structure is provided between the slider (16) and the side wall of the groove (113), and the slider (16) slides along the guide structure.

7. The switch box with locking device according to claim 5, characterized in that, The slider (16) includes an extension (163) connected to the locking part (161). The extension (163) extends toward the upper cover (12) and the top surface of the extension (163) abuts against the pressing surface (121).

8. The switch box with locking device according to claim 5, characterized in that, The slider (16) is provided with a bottom groove (164), the bottom groove (164) is open on the side facing the bottom surface of the groove (113), and one end of the elastic member (17) extends into the bottom groove (164).

9. The switch box with locking device according to claim 1, characterized in that, The upper cover (12) is provided with a protrusion (124), which is adjacent to the through groove (122). The protrusion (124) has a limiting surface on the side facing the through groove (122). When the limiting block (132) rotates into the through groove (122), the limiting surface abuts against the limiting block (132).

10. The switch box with locking device according to claim 1, characterized in that, The through hole (112) is provided on the bottom shell (11); or, the through hole (112) is provided on the top cover (12); or, a portion of the through hole (112) is provided on the bottom shell (11), and the remaining portion of the through hole (112) is provided on the top cover (12).

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