Drawer seat and circuit breaker

Abstract

The utility model provides a drawer seat and a circuit breaker. The drawer seat comprises a base, a transmission device and a first limiting device, the base comprises a bottom plate; the transmission device is mounted on the bottom plate and comprises a transmission shaft; the first limiting device is mounted on the bottom plate and comprises a mounting part and a clamping part; the mounting part is fixedly connected to the bottom plate, and the clamping part is clamped on the transmission shaft in the first direction and used for limiting movement of the transmission shaft in the first direction; wherein the first direction is the radial direction of the transmission shaft; and the clamping part is rotationally connected to the mounting part, so that the clamping part can rotate when clamping the transmission shaft. The mounting part is fixedly connected to the bottom plate and is used for fixing the first limiting device at a proper position; the clamping part is rotationally connected to the mounting part, so that the clamping part can rotate when clamping the transmission shaft, and rotation of the transmission shaft is not affected. Therefore, the problem that the transmission shaft cannot rotate due to the fact that the transmission shaft is excessively positioned, and then the stability of the transmission device is low is solved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a drawer seat and a circuit breaker. Background Art

[0002] The drawer-type circuit breaker includes a circuit breaker body and a drawer seat. A transmission device is arranged in the drawer seat, and the circuit breaker body can be slidably installed in the drawer seat or slide out of the drawer seat through the transmission device. In order to ensure that the circuit breaker body can move smoothly in the drawer seat, the transmission device needs to be properly positioned.

[0003] In the related art, the transmission shaft in the transmission device is over-positioned, resulting in that the normal rotation of the transmission shaft is restricted, thereby reducing the stability of the transmission device. Utility Model Content

[0004] The present application provides a drawer seat and a circuit breaker to solve the problem that the transmission shaft in the transmission device is over-positioned, resulting in low stability of the transmission device.

[0005] In the first aspect, the present application provides a drawer seat, comprising: a base, a transmission device and a first limiting device; the base comprises a bottom plate; the transmission device is mounted on the bottom plate, and the transmission device comprises a transmission shaft; the first limiting device is mounted on the bottom plate, and the first limiting device comprises a mounting portion and a clamping portion; the mounting portion is fixedly connected to the bottom plate, and the clamping portion clamps the transmission shaft along a first direction for limiting the movement of the transmission shaft along the first direction; wherein the first direction is a radial direction of the transmission shaft; the clamping portion is rotatably connected to the mounting portion so that the clamping portion can rotate when clamping the transmission shaft.

[0006] According to the first aspect, the drawer seat includes a base, a transmission device and a first limit device. The base includes a bottom plate, and the transmission device includes a transmission shaft; the first limit device arranged on the bottom plate is used to limit the movement of the transmission shaft in the first direction, and the first limit device includes a mounting portion and a clamping portion, wherein the mounting portion is fixedly connected to the bottom plate, and is used to fix the first limit device in a suitable position, so that the clamping portion can be clamped on the transmission shaft along the first direction, and is used to limit the movement of the transmission shaft along the first direction; the clamping portion is rotatably connected to the mounting portion, so that the clamping portion can rotate when clamping the transmission shaft, and does not affect the rotation of the transmission shaft. Thus, the first limit device can limit the movement of the transmission shaft in the first direction without affecting the rotation of the transmission shaft; and solves the problem that the transmission shaft cannot rotate due to excessive positioning of the transmission shaft, thereby causing low stability of the transmission device.

[0007] In a possible design, the clamping portion includes a first clamping structure and a second clamping structure arranged along the first direction, and the transmission shaft is clamped between the first clamping structure and the second clamping structure; the first clamping structure is fixedly connected to the mounting portion; and the second clamping structure is rotatably connected to the mounting portion.

[0008] Based on the description of the above embodiment, the clamping part includes a first clamping structure and a second clamping structure arranged along a first direction, the transmission shaft is clamped between the first clamping structure and the second clamping structure, and there is friction between the first clamping structure and the second clamping structure and the transmission shaft, so as to limit the transmission shaft in the first direction; the first clamping structure is fixedly connected to the mounting part; the second clamping structure is rotatably connected to the mounting part, and the first clamping structure can rotate relative to the transmission shaft without affecting the rotation of the transmission shaft. In addition, only the first clamping structure is rotatably connected to the mounting part, which can reduce the number of rotating parts, so as to reduce the assembly error caused by the rotating parts during assembly, improve the accuracy of the limit, and improve the stability of the transmission structure from another aspect.

[0009] In a possible design, the clamping portion includes at least two first clamping structures arranged along the first direction, and the transmission shaft is clamped between the at least two first clamping structures; and the first clamping structure is rotatably connected to the mounting portion.

[0010] Based on the description of the above embodiment, the clamping portion is configured as two first clamping structures arranged along the first direction, so that the transmission shaft is clamped between the two first structures, and there is friction between the first clamping structure and the transmission shaft, thereby achieving limitation of the transmission shaft in the first direction; since the first clamping structure is rotatably connected to the mounting portion, the contact surface of the clamping portion is smaller, and the friction between the clamping portion and the transmission shaft is also smaller, so that the transmission shaft can rotate more easily between the two first clamping structures, further reducing the influence of the first clamping device on the self-rotation of the transmission shaft, thereby improving the stability of the transmission structure.

[0011] In a possible design, a plurality of the first limiting devices are arranged along a second direction, and the second direction is the length direction of the transmission shaft.

[0012] Based on the description of the above embodiments, a plurality of first limit devices are arranged along the length direction of the transmission shaft, so that the transmission shaft is not easily deformed by torque, thereby improving the stability of the transmission device.

[0013] In a possible design, the drawer seat may further include a second limiting device, which is installed on the bottom plate along the second direction, and the second limiting device is clamped on the transmission shaft to limit the movement of the transmission shaft along the second direction.

[0014] Based on the description of the above embodiments, the second limiting device installed on the base plate is clamped on the transmission shaft to limit the movement of the transmission shaft along the second direction. The second limiting device is combined with the first limiting device to achieve limitation in the first direction and the second direction, thereby making the positioning of the transmission shaft more precise and thereby improving the stability of the transmission device.

[0015] In a possible design, the mounting portion includes a first bracket and a second bracket; the first bracket and the second bracket are respectively arranged at two ends of the clamping portion along the second direction; the first bracket and the second bracket are respectively detachably connected to the base plate.

[0016] Based on the description of the above embodiments, the mounting portion is configured to be detachably connected to a first bracket and a second bracket on the base plate, respectively, thereby ensuring the accuracy of the mounting position of the mounting portion, thereby ensuring the accuracy of the clamping position, and further improving the stability of the transmission device.

[0017] In a possible design, the mounting portion includes a first bracket, a second bracket and a connecting plate; the first bracket and the second bracket are respectively arranged at two ends of the clamping portion along the second direction; the connecting plate is connected between the first bracket and the second bracket, and the connecting plate is detachably connected to the base plate.

[0018] Based on the description of the above embodiments, the mounting part includes a first bracket, a second bracket and a connecting plate, and the connecting plate is connected between the first bracket and the second bracket, ensuring a stable connection between the clamping part and the mounting part, thereby ensuring a stable connection between the clamping part and the transmission shaft, thereby ensuring the stability of the transmission device.

[0019] In a possible design, the first clamping structure includes a rotating part and a connecting part; the rotating part is located between the first bracket and the second bracket, the two connecting parts are respectively rotatably connected to the first bracket and the second bracket, and the cross-sectional diameter of the rotating part is larger than the cross-sectional diameter of the connecting part; the two connecting parts are respectively connected to both ends of the rotating part; or; the rotating part is sleeved on the connecting part.

[0020] Based on the description of the above embodiments, the first clamping structure includes a rotating part with a large cross-sectional area and a connecting part with a small cross-sectional area, so that the first clamping structure can achieve stable positioning of the transmission shaft while saving production materials; and the two connecting parts are respectively connected to the two ends of the rotating part, or the rotating part is sleeved on the connecting part, which are all forms that can be realized by the first clamping structure.

[0021] In a possible design, the first limiting device may further include a fixing member, which is clamped on the connecting portion to prevent the first clamping structure from falling out from between the first bracket and the second bracket.

[0022] Based on the description of the above embodiments, the fixing member is clamped on the connecting portion to prevent the first clamping structure from coming out from between the first bracket and the second bracket, thereby achieving the limiting of the first clamping structure and ensuring the stability of the transmission device. In a second aspect, the present application provides a drawer-type circuit breaker, comprising: a drawer seat and a circuit breaker body as described in any of the above embodiments, wherein the circuit breaker body is slidably connected in the drawer seat.

[0023] The beneficial effects provided in the above-mentioned second aspect and various possible designs of the above-mentioned second aspect can refer to the beneficial effects brought about by the above-mentioned first aspect and various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a structural schematic diagram of a drawer seat in an embodiment of the present application;

[0026] Figure 2 An exploded view of an assembly diagram of a transmission shaft in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the structure of a first limiting device in an embodiment of the present application;

[0028] Figure 4 for Figure 2 A partial enlarged view of

[0029] Figure 5 A cross-sectional view of a bottom plate of a drawer seat in an embodiment of the present application;

[0030] Figure 6 for Figure 3 Exploded view of;

[0031] Figure 7 A schematic diagram of the structure of another first limiting device in an embodiment of the present application;

[0032] Figure 8 for Figure 7 Exploded view of.

[0033] Description of reference numerals:

[0034] 100-Drawer seat;

[0035] 1-base; 11-bottom plate; 12-side plate; 13-back plate; 14-top plate;

[0036] 21-transmission shaft; 211-second limiting groove; 22-first gear; 23-second gear; 24-rack transmission plate; 241-clip plate; 242-tooth groove; 25-screw rod;

[0037] 3-first limiting device; 31-installing part; 31a-screw connection hole; 311-first bracket; 312-second bracket; 313-connecting plate; 32-clamping part; 321-first clamping structure; 3211-rotating part; 3212-connecting part; 33-fixing member;

[0038] 4-cover plate; 41-card slot; 42 first limiting slot;

[0039] 5- screws;

[0040] X-first direction; Y-second direction. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0043] The terms "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0044] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the present application. For example, in the description of the present application, 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" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0047] In addition, the expressions of the indicated directions, such as the X direction, the Y direction, and the Z direction, used to illustrate the operation and construction of the components of the present embodiment are not absolute but relative, and although these indications are appropriate when the components of the battery pack are in the positions shown in the figures, when these positions change, these directions should be interpreted differently to correspond to the changes.

[0048] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0049] In the description of the present application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two groups (including two).

[0050] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection may also be an integral connection, such as welding, bonding or integral molding to form a connection for connection. The "connection" or "connection" of a circuit structure may refer to an electrical connection or a signal connection in addition to a physical connection. For example, it may be a direct connection, that is, a physical connection, or it may be an indirect connection through at least one intermediate element, as long as the circuit is connected, or it may be the internal connection of two elements; the signal connection may refer to a signal connection through a media medium, such as a radio wave, in addition to a signal connection through a circuit. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The drawer-type circuit breaker (not shown in the figure) includes a circuit breaker body (not shown in the figure) and a drawer seat 100. A transmission device (not shown in the figure) is provided in the drawer seat 100, and the transmission device is connected to the circuit breaker body so that the circuit breaker body is slidably connected in the drawer seat 100, so that the circuit breaker body can be pulled out of the drawer seat 100 or pushed into the drawer seat 100.

[0052] Furthermore, if Figure 1 As shown, the drawer seat 100 includes a base 1 and a transmission device. The base 1 includes a bottom plate 11 and a side plate 12. The transmission device is arranged on the bottom plate 11. The circuit breaker body is connected to the side plate 12. The bottom plate 11 is connected between the two side plates 12.

[0053] In some examples, such as Figure 2 As shown, the transmission device includes a transmission shaft 21, a first gear 22, a second gear 23, a rack transmission plate 24, a transmission gear set (not shown in the figure), a screw 25 and a handle (not shown in the figure). The operator rotates the handle, the handle drives the screw 25 to move in the spiral direction, the screw 25 drives the rack transmission plate 24 to move, the rack transmission plate 24 drives the first gear 22 to rotate, the first gear 22 drives the transmission shaft 21 to rotate, the transmission shaft 21 drives the second gear 23 to rotate, the second gear 23 drives the transmission gear set to rotate, the transmission gear set converts the rotation into linear motion, and drives the circuit breaker body to slide in the drawer seat 100.

[0054] It can be seen from the above content that in order to enable the circuit breaker body to smoothly complete the withdrawal and pushing actions, each component in the transmission device needs to be fixed in a suitable position to complete the transmission from the handle to the circuit breaker body.

[0055] Since the second gear 23 and the transmission gear set are both arranged in the interlayer of the side plate 12, the positions of the second gear 23 and the transmission gear set in the interlayer are limited by the side plate 12, and no additional positioning is required. The screw rod 25 and the handle are connected in a straight line between the rotating shafts, and no displacement will occur during the rotation process, so no additional positioning is required. Therefore, it is necessary to focus on positioning the rack transmission plate 24 and the transmission shaft 21.

[0056] like Figure 2 As shown, a cover plate 4 is provided on the base plate 11, and the cover plate 4 is buckled on the rack transmission plate 24 to protect the rack transmission plate 24; further, a snap-in piece 241 is provided on the rack transmission plate 24 along the moving direction of the rack transmission plate 24, and a snap-in groove adapted to the snap-in piece 241 is provided on the cover plate 4. When the cover plate 4 is buckled on the rack transmission plate 24, the snap-in piece 241 is snapped into the groove 41, so that the rack transmission plate 24 can only move along the moving direction of the rack transmission plate 24, thereby realizing the guiding and limiting of the rack transmission plate 24.

[0057] Continue to combine Figure 2 As a relatively important connecting member in the transmission device, the transmission shaft 21 also needs accurate positioning. However, since the transmission shaft 21 realizes transmission by self-rotation, the transmission shaft 21 cannot be affected to rotate while realizing positioning.

[0058] Based on this, the embodiment of the present application provides a drawer seat 100 , which realizes the positioning of the transmission shaft 21 by means of a first limiting device 3 provided on the bottom plate 11 without affecting the rotation of the transmission shaft 21 .

[0059] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0060] The embodiment of the present application provides a circuit breaker. The circuit breaker may be a drawer-type circuit breaker. The circuit breaker includes a circuit breaker body and a drawer seat 100 provided in the embodiment of the present application, and the circuit breaker body is slidably connected to the drawer seat 100. The circuit breaker body is the same as the circuit breaker body provided in the existing drawer-type circuit breaker. The circuit breaker body is not described in detail here, and the schematic diagram of the circuit breaker body is not shown in the drawings of the specification.

[0061] like Figure 1 , Figure 2 and Figure 3As shown, the drawer seat 100 provided in the embodiment of the present application may include: a base 1, a transmission device and a first limiting device 3; the base 1 includes a bottom plate 11; the transmission device is installed on the bottom plate 11, and the transmission device includes a transmission shaft 21; the first limiting device 3 is installed on the bottom plate 11, and the first limiting device 3 includes a mounting portion 31 and a clamping portion 32; the mounting portion 31 is fixedly connected to the bottom plate 11, and the clamping portion 32 is clamped on the transmission shaft 21 along the first direction X, for limiting the movement of the transmission shaft 21 along the first direction X; wherein the first direction X is the radial direction of the transmission shaft 21; the clamping portion 32 is rotatably connected to the mounting portion 31, so that the clamping portion 32 can rotate when clamping the transmission shaft 21.

[0062] like Figure 1 As shown, the base 1 includes a bottom plate 11, a side plate 12, a back plate 13 and a top plate 14, wherein the bottom plate 11 and the top plate 14 are arranged opposite to each other, the two side plates 12 are arranged on both sides of the bottom plate 11 and the top plate 14 along the second direction Y, the back plate 13 is connected between the two side plates 12, and the back plate 13 and the two side plates 12 are connected between the bottom plate 11 and the top plate 14. The bottom plate 11, the two side plates 12, the back plate 13 and the top plate 14 form an accommodating cavity with an opening, which is used to provide an installation space for the transmission device and other mechanical structures in the drawer seat 100. For example, the transmission device is arranged on the bottom plate 11, and the circuit breaker body enters and exits the drawer seat 100 with the transmission mechanism.

[0063] like Figure 2 As shown, the transmission structure includes a transmission shaft 21, a first gear 22, a second gear 23, a rack transmission plate 24, a transmission gear set and a screw 25. The screw 25 is arranged on the bottom plate 11 along a first direction X, wherein the first direction X is the sliding direction of the circuit breaker body in the drawer seat 100, and is also the radial direction of the transmission shaft 21. The handle is a movable part. When operation is required, the handle is inserted into one end of the screw 25 and rotated. It is not shown in the drawings of the specification, and is used to enable the operator to operate the handle outside the drawer seat 100 to complete the operation of the transmission structure after the drawer seat 100 and the circuit breaker body are assembled.

[0064] The operator turns the handle, and one end of the screw rod 25 is connected to the handle, so that the screw rod 25 rotates with the handle. The other end of the screw rod 25 is connected to the rack transmission plate 24, so that the rack transmission plate 24 moves in the first direction X. The rack transmission plate 24 is provided with a plurality of tooth grooves 242 arranged along the first direction X, and the first gear 22 is meshed in the tooth grooves 242. When the rack transmission plate 24 moves in the first direction X, the first gear 22 starts to rotate due to the meshing connection.

[0065] The first gear 22 is sleeved on the transmission rod and is fixedly connected or welded to the transmission rod so that the transmission rod and the first gear 22 do not rotate relative to each other. Therefore, when the first gear 22 rotates, the transmission shaft 21 rotates with the first gear 22 .

[0066] The transmission shaft 21 is disposed on the bottom plate 11 along the second direction Y, so that both ends of the transmission shaft 21 extend into the two side plates 12 respectively. The second direction Y is the length direction of the transmission shaft 21, which is different from the first direction X.

[0067] The two second gears 23 are respectively sleeved on both ends of the transmission rod, and are fixedly connected or welded to the transmission rod, so that the transmission rod and the second gears 23 do not rotate relative to each other. Therefore, when the transmission shaft 21 rotates, the second gears 23 rotate together with the transmission shaft 21. Since the side plate 12 is a sandwich structure, the second gears 23 are arranged in the sandwich of the side plate 12.

[0068] The transmission gear set is arranged in the interlayer of the side plate 12 and meshes with the second gear 23. The gear set has the functions of changing the transmission ratio and the transmission direction, and is used to convert the rotation of the second gear 23 into a linear motion along the first direction X.

[0069] The drawer seat includes two side panels 12, each of which has an interlayer, i.e., two interlayers. One of the aforementioned side walls is connected to a transmission gear set in one of the aforementioned interlayers. The aforementioned other side wall is connected to a transmission gear set in the aforementioned other interlayer. The transmission gear set drives the circuit breaker body to perform linear motion along the first direction X, so that the circuit breaker body is slidably connected in the drawer seat 100, and the extraction and pushing actions can be completed smoothly.

[0070] There may be two or more first gears 22, so that the connection between the transmission shaft 21, the first gear 22 and the transmission rack is more stable, which is also beneficial to the stability of the transmission device.

[0071] Also, see Figure 4 , the tooth grooves 242 on the rack transmission plate 24 are arranged along the first direction X. The number of tooth grooves 242 in a row along the first direction X can be greater than or equal to the number of gears on a first gear 22, so that the first gear 22 can at least complete one rotation, thereby not affecting the normal rotation of the transmission shaft 21 sleeved with the first gear 22. The more the number of tooth grooves 242 in a row along the first direction X, the longer the distance that the circuit breaker body can slide along the first direction X, and the number can be adjusted according to the need for the sliding distance of the circuit breaker body. The present application does not limit the specific numerical value of the number.

[0072] Since the transmission shaft 21 needs to be accurately positioned and the rotation of the transmission shaft 21 cannot be affected. Figure 3 As shown, a first limiting device 3 is provided on the bottom plate 11 , and the first limiting device 3 is used to limit the movement of the transmission shaft 21 in the first direction X, while not affecting the rotation of the transmission shaft 21 .

[0073] In some examples, such as Figure 2 and Figure 3 As shown, the first limiting device 3 includes a mounting portion 31 and a clamping portion 32. The mounting portion 31 is fixedly connected to the base plate 11 and is used to fix the first limiting device 3 at a corresponding position so that the clamping portion 32 can be clamped on the transmission shaft 21 along the first direction X; the clamping portion 32 is clamped on the transmission shaft 21 along the first direction X, so that there is a friction force with the force direction in the first direction X between the clamping portion 32 and the transmission shaft 21, which is used to limit the movement of the transmission shaft 21 in the first direction X; but since the clamping portion 32 is rotatably connected to the end of the mounting portion 31 away from the base plate 11, the rotation point is at the rotation connection point between the clamping portion 32 and the mounting portion 31, which does not affect the clamping portion 32 from rotating with the transmission shaft 21 when clamping the transmission shaft 21, thereby realizing that the first limiting device 3 is used to limit the movement of the transmission shaft 21 in the first direction X, and does not affect the rotation of the transmission shaft 21.

[0074] The mounting portion 31 can be fixed to the base plate 11 by riveting, welding or screw connection. Figure 3 and Figure 5 A screw connection hole 31a is provided on the mounting portion 31, and the screw 4 can be fixed to the base plate 11 through the screw connection hole 31a. While ensuring the stability of the fixed connection, the first limiting device 3 can be detachably connected, thereby realizing the maintenance or replacement of the first limiting device 3, so that the first limiting device 3 can be replaced in time after being worn out due to friction, so as to ensure the accuracy of the first limiting device 3 in limiting the rotating shaft.

[0075] In addition, the clamping portion 32 may be a plurality of clamping structures arranged along the first direction X, or a clamping structure with a through hole at the center. Accordingly, when the clamping portion 32 is a plurality of clamping structures, the transmission shaft 21 is clamped between the plurality of clamping structures, and friction exists between two or more clamping structures and the transmission shaft 21; when the clamping portion 32 is a clamping structure with a through hole at the center, the transmission shaft 21 is sleeved in the through hole, friction exists between the inner wall of the through hole and the transmission shaft 21, and the clamping structure as a whole is rotationally connected to the mounting portion 31.

[0076] In summary, the drawer seat 100 provided in the embodiment of the present application includes a base 1, a transmission device and a first limiting device 3. The base 1 includes a bottom plate 11, and the transmission device includes a transmission shaft 21; the first limiting device 3 provided on the bottom plate 11 is used to limit the movement of the transmission shaft 21 in the first direction X, and the first limiting device 3 includes a mounting portion 31 and a clamping portion 32, wherein the mounting portion 31 is fixedly connected to the bottom plate 11, and is used to fix the first limiting device 3 in a suitable position, so that the clamping portion 32 can be clamped on the transmission shaft 21 along the first direction X, and is used to limit the movement of the transmission shaft 21 along the first direction X; the clamping portion 32 is rotatably connected to the mounting portion 31, so that the clamping portion 32 can rotate when clamping the transmission shaft 21, and does not affect the rotation of the transmission shaft 21. Thus, the first limiting device 3 realizes that the transmission shaft 21 is not affected by the rotation of the transmission shaft 21 while limiting the movement of the transmission shaft 21 along the first direction X; and solves the problem that the transmission shaft 21 cannot rotate due to excessive positioning of the transmission shaft 21, thereby causing low stability of the transmission device.

[0077] In some embodiments, the clamping portion 32 includes a first clamping structure 321 and a second clamping structure arranged along the first direction X, and the transmission shaft 21 is clamped between the first clamping structure 321 and the second clamping structure; the first clamping structure 321 is fixedly connected to the mounting portion 31; and the second clamping structure is rotatably connected to the mounting portion 31.

[0078] When the clamping portion 32 is composed of two clamping structures, the transmission shaft 21 is clamped between the two clamping structures, and there is friction between the two clamping structures and the transmission shaft 21. When at least one clamping structure is rotatably connected to the mounting portion 31, the clamping portion 32 can rotate relative to the transmission shaft 21 without affecting the rotation of the transmission shaft 21. In addition, only one clamping structure rotatably connected to the mounting portion 31 is provided, which can reduce the assembly error caused by the rotating part during assembly, improve the accuracy of the limit, and improve the stability of the transmission structure from another aspect.

[0079] The first clamping structure 321 is rotatably connected to the mounting portion 31, and the second clamping structure is fixedly connected to the mounting portion 31. For example, the first clamping structure 321 can be a drum structure, a spherical structure, or an ellipsoidal structure rotatably connected to the mounting portion 31, and this application does not specifically limit this. The second clamping structure can be a plate-like structure, a boss structure, etc., which is fixedly connected to the mounting portion 31, and this application does not limit this either.

[0080] Based on the description of the above embodiment, the clamping portion 32 includes a first clamping structure 321 and a second clamping structure arranged along the first direction X, the transmission shaft 21 is clamped between the first clamping structure 321 and the second clamping structure, and there is friction between the first clamping structure 321 and the second clamping structure and the transmission shaft 21, so as to limit the transmission shaft 21 in the first direction X; the first clamping structure 321 is fixedly connected to the mounting portion 31; the second clamping structure is rotatably connected to the mounting portion 31, and the first clamping structure 321 can rotate relative to the transmission shaft 21 without affecting the rotation of the transmission shaft 21. In addition, only the first clamping structure 321 is rotatably connected to the mounting portion 31, which can reduce the number of rotating parts, thereby reducing the assembly error caused by the rotating parts during assembly, improving the accuracy of the limit, and improving the stability of the transmission structure from another aspect.

[0081] In some embodiments, Figure 3 As shown, the clamping portion 32 includes at least two first clamping structures 321 arranged along the first direction X, and the transmission shaft 21 is clamped between the at least two first clamping structures 321 ; the first clamping structure 321 is rotatably connected to the mounting portion 31 .

[0082] When the clamping portion 32 is two clamping structures, the transmission shaft 21 is clamped between the two first clamping structures 321, and there is friction between the two first clamping structures 321 and the transmission shaft 21. When the two first clamping structures 321 are rotatably connected to the mounting portion 31, the clamping portion 32 can rotate relative to the transmission shaft 21 without affecting the rotation of the transmission shaft 21. Among them, the first clamping structure 321 can be a drum structure, a spherical structure or an ellipsoidal structure rotatably connected to the mounting portion 31, and this application does not make specific limitations on this.

[0083] In addition, there is surface-to-surface contact between the plate-like structure, the protruding structure and other structures and the transmission shaft 21. When the two first clamping structures 321 are roller structures, spherical structures or ellipsoidal structures, the contact between the first clamping structure 321 and the transmission shaft 21 is line-to-surface contact or point-to-surface contact. Compared with surface-to-surface contact, the contact surface of line-to-surface contact or point-to-surface contact is smaller, and the friction between the transmission shaft 21 is also smaller, so that the transmission shaft 21 can rotate more easily between the two first clamping structures 321, further reducing the influence of the first clamping device on the rotation of the transmission shaft 21, thereby improving the stability of the transmission structure.

[0084] Based on the description of the above embodiment, the clamping portion 32 is configured as two first clamping structures 321 arranged along the first direction X, so that the transmission shaft 21 is clamped between the two first structures, and there is friction between the first clamping structure 321 and the transmission shaft 21, thereby achieving the limitation of the transmission shaft 21 in the first direction X; since the first clamping structure 321 is rotatably connected to the mounting portion 31, the contact surface of the clamping portion 32 is smaller, and the friction between the clamping portion 32 and the transmission shaft 21 is also smaller, so that the transmission shaft 21 can be more easily rotated between the two first clamping structures 321, further reducing the influence of the first clamping device on the self-rotation of the transmission shaft 21, thereby improving the stability of the transmission structure.

[0085] In some embodiments, Figure 2 As shown, a plurality of first limiting devices 3 are arranged along the second direction Y, and the second direction Y is the length direction of the transmission shaft 21 .

[0086] During the transmission process of the transmission device, the transmission shaft 21 needs to be driven by the first gear 22 set in the middle part to rotate, and drive the second gears 23 set at both ends of the transmission shaft 21, and the transmission shaft 21 is a long axis with the same length as the base plate 11. Such a driving relationship will cause the transmission shaft 21 to undergo torque deformation in the direction close to the base plate 11 during rotation, thereby affecting the transmission stability of the transmission device.

[0087] Based on this, multiple first limit devices 3 are set along the length direction, that is, the second direction Y, so that the transmission shaft 21 has multiple positioning points along the length direction. The positioning points can provide support force for the transmission shaft 21 while achieving positioning, so that the transmission shaft 21 is not easily deformed by torque, thereby improving the stability of the transmission device.

[0088] Based on the description of the above embodiment, a plurality of first limit devices 3 are arranged along the length direction of the transmission shaft 21, so that the transmission shaft 21 is not easily deformed by torque, thereby improving the stability of the transmission device.

[0089] In some embodiments, the drawer seat 100 may further include a second limiting device, which is installed on the bottom plate 11 along the second direction Y and is clamped on the transmission shaft 21 to limit the movement of the transmission shaft 21 along the second direction Y.

[0090] For some examples, see Figure 2 and Figure 4, the second limiting device is a first limiting groove 42 provided on the cover plate 4. The two first limiting grooves 42 are respectively provided on both sides of the cover plate 4 along the second direction Y, and the transmission shaft 21 is respectively provided with two second limiting grooves 211 along the second direction Y. When the cover plate 4 is buckled on the gear transmission plate, the two first limiting grooves 42 are respectively engaged in the two second limiting grooves 211, so that the transmission shaft 21 cannot move in the second direction Y, thereby realizing the limiting of the transmission shaft 21 in the second direction Y.

[0091] In summary, in the embodiment, the first limiting device 3 limits the transmission shaft 21 in the first direction X, and the first limiting device 3 and the second limiting device enable the transmission shaft 21 to be limited in the first direction X and the second direction Y, thereby making the positioning of the transmission shaft 21 more precise, thereby improving the stability of the transmission device.

[0092] Based on the description of the above embodiment, the second limiting device installed on the base plate 11 is clamped on the transmission shaft 21 to limit the movement of the transmission shaft 21 along the second direction Y. The second limiting device is combined with the first limiting device 3 to achieve limitation in the first direction X and the second direction Y, thereby making the positioning of the transmission shaft 21 more precise and improving the stability of the transmission device.

[0093] In some embodiments, Figure 7 and Figure 8 As shown, the mounting portion 31 includes a first bracket 311 and a second bracket 312 ; the first bracket 311 and the second bracket 312 are respectively arranged at two ends of the clamping portion 32 along the second direction Y; the first bracket 311 and the second bracket 312 are respectively detachably connected to the bottom plate 11 .

[0094] Whether the installation position of the installation part 31 is accurate determines whether the clamping position of the clamping part 32 is accurate. Therefore, in order to ensure the accuracy of the clamping position, the installation position of the installation part 31 also needs to be as accurate as possible. The first bracket 311 and the second bracket 312 are respectively connected to the bottom plate 11, so that the first bracket 311 and the second bracket 312 can be positioned respectively. In this way, even if the positioning of the first bracket 311 is not accurate enough, the positioning compensation can be performed by adjusting the positioning point of the second bracket 312, thereby ensuring the accuracy of the installation position of the installation part 31.

[0095] Moreover, both the first bracket 311 and the second bracket 312 can be detachably connected to the base plate 11. If defective parts are found after the first bracket 311 and the second bracket 312 are installed, which affects the clamping position of the clamping part 32, the parts can be replaced in time, and the positioning points of the first bracket 311 and the second bracket 312 can be modified conveniently, thereby further ensuring the accuracy of the installation position of the installation part 31.

[0096] In some examples, the first end of the first clamping structure 321 is rotatably connected to the first bracket 311, and the second end of the first clamping structure 321 is rotatably connected to the second bracket 312; the first end of the second clamping structure is fixedly connected to the first bracket 311, and the second end of the second clamping structure is fixedly connected to the second bracket 312.

[0097] In addition, the detachable connection may be a threaded connection, a locking connection, a splicing connection, etc., which are not specifically limited in this application.

[0098] Based on the description of the above embodiment, the mounting portion 31 is configured to be detachably connected to the first bracket 311 and the second bracket 312 on the base plate 11, respectively, to ensure the accuracy of the mounting position of the mounting portion 31, thereby ensuring the accuracy of the clamping position and further improving the stability of the transmission device.

[0099] In some embodiments, Figure 3 and Figure 6 As shown, the mounting portion 31 includes a first bracket 311, a second bracket 312 and a connecting plate 313; the first bracket 311 and the second bracket 312 are respectively arranged at two ends of the clamping portion 32 along the second direction Y; the connecting plate 313 is connected between the first bracket 311 and the second bracket 312, and the connecting plate 313 is detachably connected to the base plate 11.

[0100] The connecting plate 313 is connected between the first bracket 311 and the second bracket 312, so that the first bracket 311, the second bracket 312 and the connecting plate 313 are an integrally formed structure, so that when the clamping portion 32 is connected between the first bracket 311 and the second bracket 312, the supporting reaction force applied to the first bracket 311 and the second bracket 312 will not cause the first bracket 311 and the second bracket 312 to move away from the clamping portion 32, thereby ensuring a stable connection between the clamping portion 32 and the mounting portion 31, thereby ensuring a stable connection between the clamping portion 32 and the transmission shaft 21, thereby ensuring the stability of the transmission device.

[0101] Moreover, the connecting plate 313 can be detachably connected to the base plate 11. If defective parts are found after the connecting plate 313 is installed, which affects the clamping position of the clamping portion 32, the parts can be replaced in time, and the positioning point of the connecting plate 313 can be modified conveniently, further ensuring the accuracy of the installation position of the mounting portion 31.

[0102] In some examples, the first end of the first clamping structure 321 is rotatably connected to the first bracket 311, and the second end of the first clamping structure 321 is rotatably connected to the second bracket 312; the first end of the second clamping structure is fixedly connected to the first bracket 311, and the second end of the second clamping structure is fixedly connected to the second bracket 312.

[0103] In addition, the detachable connection may be a threaded connection, a locking connection, a splicing connection, etc., which are not specifically limited in this application.

[0104] Based on the description of the above embodiments, Figure 7 As shown, the mounting portion 31 includes a first bracket 311, a second bracket 312 and a connecting plate 313, and the connecting plate 313 is connected between the first bracket 311 and the second bracket 312, ensuring a stable connection between the clamping portion 32 and the mounting portion 31, thereby ensuring a stable connection between the clamping portion 32 and the transmission shaft 21, thereby ensuring the stability of the transmission device.

[0105] In some embodiments, the first clamping structure 321 includes a rotating portion 3211 and a connecting portion 3212; the rotating portion 3211 is located between the first bracket 311 and the second bracket 312, and the two connecting portions 3212 are respectively rotatably connected to the first bracket 311 and the second bracket 312, and the cross-sectional diameter of the rotating portion 3211 is larger than the cross-sectional diameter of the connecting portion 3212; the two connecting portions 3212 are respectively connected to the two ends of the rotating portion 3211; or; the rotating portion 3211 is sleeved on the connecting portion 3212.

[0106] The first end of the first clamping structure 321 is rotatably connected to the first bracket 311, and the second end of the first clamping structure 321 is rotatably connected to the second bracket 312. In some examples, the rotational connection may be a hole-shaft connection, for example, the first bracket 311 and the second bracket 312 are provided with mounting holes, and the connecting portion 3212 of the first clamping structure 321 is a shaft pin structure, and the connecting portion 3212 is sleeved in the mounting hole to complete the rotational connection.

[0107] In addition, the cross-sectional diameter of the shaft pin structure sleeved in the mounting hole should be as small as possible to save materials; however, the rotating portion 3211 is used to position the transmission shaft 21, which requires a greater structural strength, so the cross-sectional diameter of the rotating portion 3211 cannot be too small. In addition, when the first clamping structure 321 is a structure that is wide in the middle and narrow at both ends, there is a step limit in the connection between the first clamping structure 321 and the first bracket 311 and the second bracket 312, so that the first clamping structure 321 cannot be disengaged from the direction of the rotating portion 3211, thereby playing a certain degree of limiting role.

[0108] In some examples, one form of the first clamping structure 321 is that the connecting portion 3212 is respectively connected to both ends of the rotating portion 3211. For example, the rotating portion 3211 is a roller structure in the shape of a cylinder, an ellipsoid or a sphere; the connecting portion 3212 is a positioning pin fixed to both ends of the roller structure.

[0109] Another form of the first clamping structure 321 is: the rotating part 3211 is sleeved on the connecting part 3212. For example, the rotating part 3211 is a sleeve structure in the shape of a cylinder, an ellipsoid or a sphere, and through holes are provided at both ends of the roller structure; the connecting part 3212 is an inner core that penetrates the sleeve, wherein the length of the inner core is greater than the length of the sleeve, so that both ends of the connecting part 3212 can be rotatably connected to the mounting part 31.

[0110] It should be noted that there is no specific limitation on the form of the first clamping structure 321 in the embodiment of the present application.

[0111] Based on the description of the above embodiment, the first clamping structure 321 includes a rotating part 3211 with a large cross-sectional area and a connecting part 3212 with a small cross-sectional area, so that the first clamping structure 321 can achieve stable positioning of the transmission shaft 21 while saving production materials; and the two connecting parts 3212 are respectively connected to the two ends of the rotating part 3211, or the rotating part 3211 is sleeved on the connecting part 3212, which are all forms that can be realized by the first clamping structure 321.

[0112] In some embodiments, Figure 3 Based on the structure shown, Figure 6 and Figure 8 As shown, the first limiting device 3 may further include a fixing member 33 , which is clamped on the connecting portion 3212 to prevent the first clamping structure 321 from falling out from between the first bracket 311 and the second bracket 312 .

[0113] According to the above content, the step limit makes the first clamping structure 321 unable to escape from the direction of the rotating part 3211, thereby playing a certain degree of limiting role. In order to prevent the first clamping structure 321 from escaping from the direction of the connecting part 3212, a fixing member 33 is clamped on the connecting part 3212, so that when the first clamping structure 321 escapes from the direction of the connecting part 3212, it abuts against the fixing member 33, thereby ensuring that the first clamping structure 321 will not be between the first bracket 311 and the second bracket 312, realizing the limiting of the first clamping structure 321, and then ensuring the stability of the transmission device.

[0114] In some examples, the fixing member 33 may be a clip connected to the connecting portion 3212, or a nut connected to the connecting portion 3212. It should be noted that when the fixing member 33 is a nut, the connecting portion 3212 needs to be tapped accordingly.

[0115] Based on the description of the above embodiment, the fixing member 33 is clamped on the connecting portion 3212 to prevent the first clamping structure 321 from escaping from between the first bracket 311 and the second bracket 312, thereby limiting the first clamping structure 321 and ensuring the stability of the transmission device.

[0116] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0117] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A drawer seat, characterized in that: include: A base, a transmission device and a first limiting device; The base includes a bottom plate; The transmission device is mounted on the bottom plate, and the transmission device includes a transmission shaft; The first limiting device is mounted on the bottom plate, and the first limiting device includes a mounting portion and a clamping portion; The mounting portion is fixedly connected to the bottom plate, and the clamping portion is clamped on the transmission shaft along a first direction to limit the movement of the transmission shaft along the first direction; wherein the first direction is a radial direction of the transmission shaft; The clamping portion is rotatably connected to the mounting portion, so that the clamping portion can rotate when clamping the transmission shaft.

2. The drawer seat according to claim 1, characterized in that: The clamping portion includes a first clamping structure and a second clamping structure arranged along the first direction, and the transmission shaft is clamped between the first clamping structure and the second clamping structure; The first clamping structure is fixedly connected to the mounting portion; The second clamping structure is rotatably connected to the mounting portion.

3. The drawer seat according to claim 2, characterized in that: The clamping portion comprises at least two first clamping structures arranged along the first direction, and the transmission shaft is clamped between the at least two first clamping structures; The first clamping structure is rotatably connected to the mounting portion.

4. The drawer seat according to claim 3, characterized in that: A plurality of the first limiting devices are arranged along a second direction, and the second direction is the length direction of the transmission shaft.

5. The drawer seat according to claim 4, characterized in that: A second limiting device may also be provided, wherein the second limiting device is mounted on the bottom plate along the second direction, and the second limiting device is clamped on the transmission shaft to limit the movement of the transmission shaft along the second direction.

6. The drawer seat according to claim 5, characterized in that: The mounting portion includes a first bracket and a second bracket; The first bracket and the second bracket are respectively arranged at two ends of the clamping portion along the second direction; The first bracket and the second bracket are respectively detachably connected to the bottom plate.

7. The drawer seat according to claim 5, characterized in that: The mounting portion includes a first bracket, a second bracket and a connecting plate; The first bracket and the second bracket are respectively arranged at two ends of the clamping portion along the second direction; The connecting plate is connected between the first bracket and the second bracket, and the connecting plate is detachably connected to the bottom plate.

8. The drawer seat according to claim 6 or 7, characterized in that: The first clamping structure includes a rotating portion and a connecting portion; The rotating part is located between the first bracket and the second bracket, the two connecting parts are respectively rotatably connected to the first bracket and the second bracket, and the cross-sectional diameter of the rotating part is larger than the cross-sectional diameter of the connecting part; The two connecting parts are respectively connected to the two ends of the rotating part; or; The rotating part is sleeved on the connecting part.

9. The drawer seat according to claim 8, characterized in that: The first limiting device may also be a fixing member, and the fixing member is clamped on the connecting portion to prevent the first clamping structure from falling out from between the first bracket and the second bracket.

10. A circuit breaker, characterized in that: It comprises a drawer seat and a circuit breaker body according to any one of claims 1 to 9, wherein the circuit breaker body is slidably connected in the drawer seat.

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