Operating handle change-over switch and electrical cabinet

Abstract

The utility model discloses an operating handle change-over switch, and relates to the field of control equipment, a rotating handle is rotatably assembled on a mounting base, the rotating handle can rotate around a rotating shaft relative to the mounting base, a plurality of limiting holes are arranged on the mounting base around the rotating shaft of the rotating handle, and limiting blocks are respectively arranged in two of the limiting holes; the rotating handle is provided with the stopping block used for making contact with the limiting block, when the stopping block makes contact with the limiting block, the rotating handle cannot continue to rotate, and therefore the rotating range of the rotating handle is stopped and limited, the rotating handle rotates within a certain angle range, and damage caused by the too large rotating angle is avoided. The electrical cabinet can achieve the same technical effect.

Description

Technical Field

[0001] The utility model relates to the field of control devices, and further relates to an operating handle changeover switch and an electric cabinet. Background Art

[0002] The operating handle changeover switch is widely used in control devices and is installed on the control panel console. The operating handle changeover switch has different rotation gears to achieve predetermined functions.

[0003] For the existing operating handle changeover switches, some have only one rotation direction and cannot provide tactile feedback to the operator. When the rotation angle is too large, the rotation force is likely to be too large, damaging the use functions of internal components.

[0004] For those skilled in the art, how to avoid damage caused by too large a rotation angle is a technical problem that needs to be solved currently. Summary of the Utility Model

[0005] The core of the utility model is to provide an operating handle changeover switch, which can limit the rotation handle to rotate within a certain angle range to avoid damage caused by too large a rotation angle. The specific solution is as follows:

[0006] An operating handle changeover switch includes a mounting base and a rotation handle. The mounting base is used for fixedly installing on a support carrier. The rotation handle is rotationally assembled on the mounting base and can rotate around a rotating shaft.

[0007] A number of limit holes are arranged on the mounting base around the rotating shaft of the rotation handle, and limit blocks are respectively arranged in two of the limit holes. A blocking block for contacting the limit block is arranged on the rotation handle. The blocking block is used to cooperate with the limit block to block and limit the rotation range of the rotation handle.

[0008] Optionally, the distance from each limit hole to the rotating shaft of the rotation handle is equal, and the limit holes are evenly distributed in the circumferential direction.

[0009] Optionally, a limit boss is arranged on the mounting base, and the limit holes are arranged on the limit boss;

[0010] A number of anti-rotation grooves are arranged on the limit boss;

[0011] An anti-rotation key is slidably installed axially on the rotation handle. The anti-rotation shaft arranged on the anti-rotation key can be inserted and matched with the anti-rotation groove for circumferentially locking the rotation handle.

[0012] Optionally, an anti-return hole is arranged on the rotation handle, and an anti-return blocking member is inserted into the anti-return hole to block the anti-rotation key from resetting.

[0013] Optionally, a return spring is installed between the rotation prevention button and the rotation handle, and the return spring is used to apply an axial elastic force to the rotation prevention button to reset it.

[0014] Optionally, the rotation prevention shaft is a screw rod threadedly installed on the rotation prevention button;

[0015] A guiding hole for slidably installing the rotation prevention shaft is provided on the blocking block.

[0016] Optionally, a positioning snap ring is fixedly assembled on the rotation handle, and a positioning slider is axially slidably assembled on the mounting base; a positioning elastic member is provided between the positioning slider and the mounting base, and the positioning elastic member is used to apply an elastic force to the positioning slider to contact the positioning snap ring;

[0017] Smooth teeth blocks with wavy concavo-convex fits are respectively provided on the contact surfaces of the positioning snap ring and the positioning slider for forming gear positions.

[0018] Optionally, the positioning snap ring and the rotation handle are respectively located on both sides of the mounting base, and the positioning snap ring and the rotation handle are axially tensioned and assembled by a fixing bolt.

[0019] Optionally, the forms of assembling the limiting block in the limiting hole include: threaded connection, welding, interference fit, pin connection, snap connection.

[0020] The present utility model also provides an electrical cabinet, including the operating handle conversion switch described in any one of the above.

[0021] The present utility model provides an operating handle conversion switch. The rotation handle is rotatably assembled on the mounting base, and the rotation handle can rotate relative to the mounting base around a rotation shaft. A plurality of limiting holes are provided on the mounting base around the rotation shaft of the rotation handle, and limiting blocks are respectively provided in two of the limiting holes; a blocking block for contacting the limiting block is provided on the rotation handle. When the blocking block contacts the limiting block, it cannot continue to rotate, thereby blocking and limiting the rotation range of the rotation handle, enabling the rotation handle to rotate within a certain angle range and avoiding damage caused by excessive rotation angle. The above-mentioned electrical cabinet can achieve the same technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following 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.

[0023] Figure 1ATop view of an embodiment of the operating handle changeover switch of the present utility model;

[0024] Figure 1B Front elevation sectional view of an embodiment of the operating handle changeover switch of the present utility model;

[0025] Figure 2A Top view of an embodiment of the mounting base;

[0026] Figure 2B Front elevation sectional view of an embodiment of the mounting base;

[0027] Figure 2C Top view of the mounting base assembled with the limit block;

[0028] Figure 2D Front view of the mounting base assembled with the limit block;

[0029] Figure 2E Front elevation sectional view of the mounting base assembled with the limit block;

[0030] Figure 3A Front view of an embodiment of the rotating handle;

[0031] Figure 3B Front elevation sectional view of an embodiment of the rotating handle;

[0032] Figure 4A Front view of an embodiment of the limit block;

[0033] Figure 4B Front elevation sectional view of an embodiment of the limit block;

[0034] Figure 5A Front view of an embodiment of the anti-rotation button;

[0035] Figure 5B Front elevation sectional view of an embodiment of the anti-rotation button;

[0036] Figure 6A Front view of an embodiment of the positioning snap ring;

[0037] Figure 6B Front elevation sectional view of an embodiment of the positioning snap ring;

[0038] Figure 7A Top view of an embodiment of the positioning slider;

[0039] Figure 7B Front view of an embodiment of the positioning slider.

[0040] The figure includes:

[0041] Installation base 1, limit hole 11, limit boss 12, anti-rotation groove 13, rotating handle 2, blocking block 21, anti-return hole 22, limit block 3, anti-rotation button 4, anti-rotation shaft 41, return spring 42, positioning snap ring 5, fixing bolt 51, positioning slider 6, positioning elastic member 61. Detailed implementation mode

[0042] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the operation handle conversion switch and electrical cabinet of the present utility model will be introduced and described in detail below in conjunction with the drawings and specific implementation modes.

[0043] The present utility model provides an operation handle conversion switch, including an installation base 1 and a rotating handle 2. The installation base 1 is a fixed assembly structure, and the installation base 1 is fixedly installed on a support carrier, such as on the cabinet body of an electrical cabinet; the rotating handle 2 is a rotating assembly structure, and the rotating handle 2 is rotatably assembled on the installation base 1. The rotating handle 2 can rotate relative to the installation base 1 around a rotating shaft; corresponding function control is realized through the rotation of the rotating handle 2. As Figure 1A shown, the rotating handle 2 can rotate clockwise and counterclockwise. As Figure 1B shown, the rotating shaft of the rotating handle 2 is a vertical line. The rotating handle 2 cannot displace axially relative to the installation base 1.

[0044] A number of limit holes 11 are provided around the rotating shaft of the rotating handle 2 on the installation base 1. The number of limit holes 11 is greater than 2. Limit blocks 3 are respectively arranged in two of the limit holes 11. The number of limit holes 11 is more than the number of limit blocks 3. Only two limit blocks 3 need to be provided, and the number of limit holes 11 is more than two. And the circumferential angles of each limit hole 11 are different. When the limit block 3 is installed in different limit holes 11, the limited positions of the rotating handle 2 are different.

[0045] Combined with Figure 1B , a blocking block 21 for contacting the limit block 3 is provided on the rotating handle 2. Combined with Figure 1B shown, in this embodiment, the blocking block 21 is arranged inside the rotating handle 2 to ensure the neatness and beauty of the outside of the rotating handle 2. The blocking block 21 is used to cooperate with the limit block 3 to block and limit the rotation range of the rotating handle 2. The position of the limit hole 11 does not affect the normal rotation of the rotating handle 2. Combined with Figure 2D , Figure 2E shown, when the limit block 3 is installed in the limit hole 11, the upper end of the limit block 3 protrudes from the installation base 1, and the limit block 3 is located on the rotation path of the blocking block 21. When the blocking block 21 contacts the limit block 3, the rotating handle 2 reaches the limit position. By setting the positions of the two limit blocks 3, the rotating handle 2 rotates within the central angle range formed by the two limit blocks 3.

[0046] It should be noted that the distances between the respective limiting holes 11 and the axis of rotation of the rotary handle 2 can be equal or unequal. For the convenience of processing, the respective limiting holes 11 are usually arranged on the same circumference. The central angles between two adjacent limiting holes 11 can be equal or unequal, and the limiting holes 11 are usually evenly distributed along the circumference. The diameters of the respective limiting holes 11 can be equal or unequal. For better versatility, the diameters of the respective limiting holes 11 are usually equal. The number of the limiting blocks 3 can also be more than two, and only two play the role of blocking and limiting, and the others are for backup.

[0047] By providing a plurality of limiting holes 11 and two limiting blocks 3, the present utility model can limit the rotation angle range of the rotary handle 2. When the blocking block 21 contacts the limiting block 3, it cannot rotate further, so that the rotary handle rotates within a certain angle range, avoiding damage caused by excessive rotation angle. Since the position of the limiting block 3 can be adjusted, the position of the limiting block 3 can be freely set according to the needs of use, which has better flexibility.

[0048] On the basis of the above solution, the distances from each limiting hole 11 of the present utility model to the axis of rotation of the rotary handle 2 are equal, and the respective limiting holes 11 are evenly distributed along the circumferential direction. Combining Figure 2A 、 Figure 2C as shown, a total of 8 limiting holes 11 are provided, and all the respective limiting holes 11 are located on the same circumference, and the central angles between two adjacent limiting holes 11 are equal. In addition to the structures shown in the drawings, the number of the limiting holes 11 can also adopt other setting forms.

[0049] Combining Figure 2A 、 Figure 2B as shown, a limiting boss 12 is provided on the mounting base 1. The limiting boss 12 is located near the center of the mounting base 1. The limiting boss 12 protrudes upward and is higher than other positions of the mounting base 1. The limiting holes 11 are provided on the limiting boss 12, so that the limiting holes 11 have sufficient installation depth.

[0050] The limiting boss 12 is provided with a plurality of anti-rotation grooves 13, as Figure 2A 、 Figure 2C shown. The anti-rotation grooves 13 are notch structures at the outer side wall of the limiting boss 12, and the anti-rotation grooves 13 and the limiting boss 12 are arranged at intervals in a staggered manner. In addition to adopting an open notch structure, the anti-rotation grooves 13 can also be provided as closed blind hole grooves.

[0051] Combining Figure 1B as shown, an anti-rotation button 4 is slidably mounted on the rotary handle 2 along the axial direction, Figure 5A 、 Figure 5BShown is the structure of the rotation prevention button 4; the rotation prevention shaft 41 provided on the rotation prevention button 4 can be inserted and fitted with the rotation prevention groove 13 for circumferentially locking the rotation handle 2. The rotation prevention shaft 41 is fixed to the rotation prevention button 4, and the two move synchronously. When the rotation prevention button 4 moves downward toward the installation base 1, the rotation prevention shaft 41 can be inserted into one of the rotation prevention grooves 13, thereby realizing the locking of the rotation handle 2. In the state where the rotation prevention shaft 41 is inserted into the rotation prevention groove 13, the rotation handle 2 cannot continue to rotate; when the rotation prevention shaft 41 is withdrawn upward from the rotation prevention groove 13, the locking of the rotation handle 2 is released, and the rotation handle 2 can rotate normally.

[0052] Combined with Figure 3A 、 Figure 3B As shown, an anti-return hole 22 is provided on the rotation handle 2. An anti-return blocking member is inserted into the anti-return hole 22 to block the reset of the rotation prevention button 4. When an anti-return blocking member (not shown in the figure) is inserted into the anti-return hole 22, the rotation prevention button 4 remains in the downwardly pressed state and cannot rebound, so that the rotation prevention shaft 41 remains inserted into the rotation prevention groove 13, which can prevent the accidental release of the locking of the rotation handle 2.

[0053] A return spring 42 is installed between the rotation prevention button 4 and the rotation handle 2. The two ends of the return spring 42 respectively abut against the rotation prevention button 4 and the rotation handle 2. The return spring 42 is used to apply an axial elastic force to the rotation prevention button 4 to reset it. Combined with Figure 1B As shown, when the rotation prevention button 4 is pressed downward, when no anti-return blocking member is inserted into the anti-return hole 22, once the pressing force is removed, the rotation prevention button 4 is pushed upward by the return spring 42, and the operator does not need to manually pull up the rotation prevention button 4.

[0054] Specifically, the rotation prevention shaft 41 of the present utility model is a screw rod threadedly installed on the rotation prevention button 4. The upper end of the screw rod is provided with an external thread, and the inner wall of the rotation prevention button 4 is provided with an internal thread, and the two are screwed and fixedly connected. A guiding hole for slidably installing the rotation prevention shaft 41 is provided on the blocking block 21. The guiding hole can be slidably assembled with the smooth rod portion on the outer surface of the rotation prevention shaft 41, and the overlapping contact portion between the guiding hole and the rotation prevention shaft 41 can play a guiding role.

[0055] Furthermore, a positioning snap ring 5 is fixedly assembled on the rotation handle 2 of the present utility model, and the positioning snap ring 5 rotates synchronously with the rotation handle 2. A positioning slider 6 is slidably assembled axially on the installation base 1. The positioning slider 6 can slide axially relative to the installation base 1 but cannot rotate. A positioning elastic member 61 is provided between the positioning slider 6 and the installation base 1. The positioning elastic member 61 is used to apply an elastic force for contacting the positioning snap ring 5 to the positioning slider 6; Combined with Figure 1BAs shown, the positioning elastic member 61 is a helical spring. The top end of the positioning elastic member 61 contacts the mounting base 1, and the bottom end contacts the positioning snap ring 5. A downward elastic force is applied to the positioning slider 6 through the positioning elastic member 61, so that the positioning slider 6 always contacts the positioning snap ring 5.

[0056] Combined with Figure 6A , Figure 6B , Figure 7A , Figure 7B As shown, the contact surfaces of the positioning snap ring 5 and the positioning slider 6 are respectively provided with smooth teeth in a wavy concave-convex fit for forming gears. The teeth provided on both the positioning snap ring 5 and the positioning slider 6 are in a structure with concave and convex intervals distributed in a circular shape. The convex blocks of the positioning slider 6 are inserted into the grooves of the positioning snap ring 5 in a matching manner, and the convex blocks of the positioning snap ring 5 are inserted into the grooves of the positioning slider 6 in a matching manner. When the positioning snap ring 5 rotates, it can only stop at a predetermined gear position; the specific number of gears can be adjusted according to the usage requirements.

[0057] The main body of the positioning snap ring 5 is a cylinder, and a square column is provided at its top end for inserting and synchronously rotating with the rotary handle 2. A circular ring-shaped convex platform is provided on the outer side wall of its bottom, and wavy teeth are provided on the upper surface of the convex platform. The positioning slider 6 is a circular ring-shaped cylindrical shell, with wavy teeth provided at its top end and several convex blocks provided on its outer wall for slidingly cooperating with the guide groove of the mounting base 1. The main body of the positioning snap ring 5 is inserted into the positioning slider 6, and the wavy teeth of the convex blocks at the bottom of the positioning snap ring 5 match the wavy teeth at the top end of the positioning slider 6. When the positioning snap ring 5 rotates, the positioning slider 6 is axially lifted through the wavy teeth to resist the elastic force of the positioning elastic member 61. After the screwing force is removed, under the action of the elastic force of the positioning elastic member 61, the positioning snap ring 5 and the positioning slider 6 stop at a certain gear position.

[0058] The positioning snap ring 5 and the rotary handle 2 are respectively located on both sides of the mounting base 1. Combined with Figure 1B As shown, the positioning snap ring 5 is located on the lower side of the mounting base 1, and the rotary handle 2 is located on the upper side of the mounting base 1. The positioning snap ring 5 and the rotary handle 2 are axially tightened and assembled through the fixing bolt 51 to relatively fix the positioning snap ring 5 and the rotary handle 2, and the positioning snap ring 5 and the rotary handle 2 can rotate synchronously relative to the mounting base 1.

[0059] The forms of assembling the limiting block 3 into the limiting hole 11 include threaded connection, welding, interference fit, pin connection, snap connection, etc. Threaded connection: External threads are machined at the bottom of the limiting block 3, and internal threaded holes are correspondingly machined in the limiting hole 11, and the connection is achieved by rotating and tightening. Welding: The limiting block 3 is directly welded in the limiting hole 11 using welding technology, and the connection is firm but not detachable. Interference fit: An interference fit is formed between the limiting block 3 and the limiting hole 11, and a tight connection is achieved by relying on pressure. Pin connection: A hole is drilled in the limiting block 3, and a pin is inserted into the drilled hole of the limiting block 3 and the limiting hole 11 to fix the connection. Snap connection: Corresponding tenons are provided on the limiting block 3, and the connection is achieved by snapping into the limiting hole 11.

[0060] The present utility model also provides an electrical cabinet, including the above-mentioned operating handle changeover switch, and the electrical cabinet can achieve the same technical effects.

[0061] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An operating handle switch, characterized in that: It comprises a mounting base (1) and a rotating handle (2), wherein the mounting base (1) is used for being fixedly mounted on a supporting carrier, and the rotating handle (2) is rotatably mounted on the mounting base (1), and the rotating handle (2) is capable of rotating around a rotating axis; A plurality of limiting holes (11) are arranged on the mounting base (1) around the rotation axis of the rotating handle (2), wherein limiting blocks (3) are respectively arranged in two of the limiting holes (11); a blocking block (21) for contacting the limiting block (3) is arranged on the rotating handle (2); and the blocking block (21) is used to cooperate with the limiting block (3) so as to block and limit the rotation range of the rotating handle (2).

2. The operating handle switch according to claim 1, characterized in that: The distance between each of the limiting holes (11) and the rotating shaft of the rotating handle (2) is equal, and the limiting holes (11) are evenly distributed along the circumferential direction.

3. The operating handle switch according to claim 1, characterized in that: A limiting boss (12) is provided on the mounting base (1), and the limiting hole (11) is provided on the limiting boss (12); The limiting boss (12) is provided with a plurality of anti-rotation grooves (13); A stop button (4) is axially slidably mounted on the rotating handle (2), and a stop shaft (41) provided on the stop button (4) can be inserted and matched with the stop groove (13) to circumferentially lock the rotating handle (2).

4. The operating handle switch according to claim 3, characterized in that: An anti-return hole (22) is provided on the rotating handle (2), and an anti-return blocking member is inserted into the anti-return hole (22) to prevent the anti-rotation button (4) from resetting.

5. The operating handle switch according to claim 4, characterized in that: A return spring (42) is installed between the anti-rotation button (4) and the rotating handle (2), and the return spring (42) is used to apply an axial elastic force to the anti-rotation button (4) to reset it.

6. The operating handle conversion switch according to claim 3, characterized in that: The anti-rotation shaft (41) is a screw threadedly mounted on the anti-rotation button (4); The blocking block (21) is provided with a guide hole for slidingly installing the anti-rotation shaft (41).

7. The operating handle switch according to claim 1, characterized in that: A positioning collar (5) is fixedly mounted on the rotating handle (2), and a positioning slider (6) is axially slidably mounted on the mounting base (1); a positioning elastic member (61) is provided between the positioning slider (6) and the mounting base (1), and the positioning elastic member (61) is used to apply an elastic force to the positioning slider (6) to contact the positioning collar (5); The contact surfaces of the positioning collar (5) and the positioning slide block (6) are respectively provided with smooth tooth blocks with wavy concave and convex matching, which are used to form a gear position.

8. The operating handle conversion switch according to claim 7, characterized in that: The positioning collar (5) and the rotating handle (2) are respectively located on two sides of the mounting base (1), and the positioning collar (5) and the rotating handle (2) are assembled by tightening them axially via fixing bolts (51).

9. The operating handle switch according to any one of claims 1 to 8, characterized in that: The limiting block (3) is assembled in the limiting hole (11) in the following ways: threaded connection, welding, interference fit, pin connection, and snap connection.

10. An electrical cabinet, characterized in that: The invention comprises an operating handle conversion switch as described in any one of claims 1 to 9.

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