A foldable handle and drawer base

Abstract

This utility model discloses a foldable handle and drawer base, relating to the field of electrical structure drive components. It includes a rotating arm, an actuating arm, and a driving arm. The first end of the rotating arm is provided with a snap-fit ​​connector for engaging with a snap-fit ​​hole on the driven component. The first end of the actuating arm is rotatably connected to the second end of the rotating arm. The first end of the driving arm is provided with a mounting portion, and the second end of the actuating arm is rotatably connected to the mounting portion. The first end of the actuating arm is provided with a first limiting structure, and the mounting portion is provided with a second limiting structure. The first and second limiting structures enable the rotating arm, actuating arm, and driving arm to form a Z-shape. In the non-working state, the driving arm can fold towards the actuating arm. Storage or transportation requirements can be met without disassembling the three components. No temporary assembly is required during use, reducing operation time, improving work efficiency, and preventing the loss of parts.

Description

Technical Field

[0001] This utility model relates to the field of electrical structure drive components, and in particular to a foldable handle and drawer base. Background Technology

[0002] In low-voltage power distribution systems, circuit breaker drawer seats typically require a dedicated operating handle to drive them in or out. Existing handles are generally designed to be detachable for easy storage and transport. However, in practice, this design requires users to manually assemble the rotating arm, actuating arm, and drive arm before each operation, increasing operation time and impacting work efficiency. Furthermore, because the components are detachable, individual parts may be lost during frequent use, rendering the handle unusable. Utility Model Content

[0003] The purpose of this utility model is to provide a foldable handle and drawer base, in which the rotating arm, the actuating arm and the driving arm are arranged in a sequentially rotatable connection, and the three can be kept at a specific angle by the first limiting structure and the second limiting structure to meet normal use, thus realizing the foldability of the handle.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a foldable handle, including:

[0006] A rotating arm, the first end of which is provided with a snap-fit ​​connector, the snap-fit ​​connector being used to engage with a snap-fit ​​hole on the driven component;

[0007] An action arm, wherein a first end of the action arm is rotatably connected to a second end of a rotating arm, the axis of a first rotation center of the action arm is perpendicular to the axis of the rotating arm, and a first limiting structure for limiting the rotation angle of the rotating arm is provided at the first end of the action arm;

[0008] The drive arm has a first end with a mounting portion extending radially along the drive arm, and a second end of the action arm is rotatably connected to the mounting portion. The axis of the second rotation center of the drive arm is perpendicular to the axis of the action arm. The mounting portion has a second limiting structure for limiting the rotation angle of the action arm. The axis of the second rotation center is parallel to the axis of the first rotation center. The first limiting structure and the second limiting structure enable the rotating arm, the action arm, and the drive arm to form a Z-shape.

[0009] In one embodiment, the second end of the actuating arm is provided with a second mounting groove extending along the axial direction of the actuating arm. The second mounting groove penetrates the actuating arm radially. The mounting part extends into the second mounting groove. The actuating arm and the driving arm are rotatably connected by a pin arranged along the line connecting the mounting part and the second mounting groove.

[0010] As one embodiment, the drive arm has a plate-like structure.

[0011] As one embodiment, it also includes a sleeve, with the second end of the drive arm extending into the sleeve, and the drive arm being rotatably connected to the sleeve.

[0012] As one embodiment, the second end of the drive arm is provided with a connecting block, the second end of the drive arm extends into the sleeve from the first end of the sleeve, the connecting block extends out from the second end of the sleeve, and the connecting block is radially provided with a third limiting structure for restricting the axial movement of the connecting block.

[0013] As one embodiment, the drive arm is provided with a limiting protrusion, which extends radially away from the axis of the drive arm and is used to prevent the sleeve from moving toward the first end of the drive arm.

[0014] This utility model also discloses a drawer base, comprising:

[0015] A housing, wherein a placement hole is provided on the housing;

[0016] The aforementioned foldable handle is placed inside the placement hole;

[0017] A driven component is installed inside the housing. The driven component has a snap-fit ​​hole exposed on the surface of the housing, which is used to snap-fit ​​with the snap-fit ​​connector.

[0018] As one embodiment, along the axial direction of the drive arm, a gripping protrusion is provided on the side of the mounting portion away from the drive arm, and the gripping protrusion can extend along the axial direction of the drive arm to the outside of the placement hole.

[0019] As one embodiment, the placement hole is provided with a snap-fit ​​protrusion that can extend and retract radially along the placement hole, and the side wall of the drive arm is provided with a snap-fit ​​groove that matches the snap-fit ​​protrusion.

[0020] As one embodiment, an elastic sheet is provided inside the housing, the elastic sheet extends axially along the placement hole, the elastic sheet is capable of elastic deformation along the radial direction of the placement hole, and the snap-fit ​​protrusion is mounted on the elastic sheet.

[0021] The present invention achieves the following technical advantages over the prior art:

[0022] In the foldable handle disclosed in this utility model, a rotating arm, an action arm, and a drive arm are rotatably connected in sequence, and the axes of rotation centers between any two are parallel. The first end of the action arm is provided with a first limiting structure for limiting the rotation angle of the rotating arm, and the mounting part of the drive arm is provided with a second limiting structure for limiting the rotation angle of the action arm. In actual operation, the rotating arm abuts against the first limiting structure, and the action arm abuts against the second limiting structure. Under the action of the first and second limiting structures, the rotating arm, action arm, and drive arm can form a Z-shape to meet the basic usage requirements of the handle. When not in operation, pushing the drive arm in the opposite direction can fold the drive arm towards the action arm. The three parts can be stored or transported without disassembling them. Compared with setting the rotating arm, action arm, and drive arm to be detachable, the handle in this application does not require temporary splicing during use, which reduces operation time, improves work efficiency, and avoids the problem of lost parts. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the foldable handle in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the non-working state of the foldable handle in an embodiment of this utility model;

[0026] Figure 3 This is a schematic diagram showing the cooperation between the sleeve and the drive arm in an embodiment of this utility model;

[0027] Figure 4 for Figure 3 A cross-sectional view;

[0028] Figure 5 This is a schematic diagram of the drive arm in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the sleeve in an embodiment of the present utility model;

[0030] Figure 7 This is a schematic diagram of the limiting block in an embodiment of the present utility model;

[0031] Figure 8 This is a schematic diagram of the working arm in an embodiment of the present utility model;

[0032] Figure 9 This is a schematic diagram of the rotating arm in an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the drawer base in an embodiment of the present utility model;

[0034] Figure 11 This is a schematic diagram of the working state of the foldable handle in an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the foldable handle in its stowed state according to an embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of the snap-fit ​​protrusion in an embodiment of the present utility model;

[0037] Figure 14 for Figure 13 A cross-sectional view;

[0038] Among them, 1. Rotating arm; 2. Actuating arm; 3. Driving arm; 4. Mounting part; 5. Second mounting groove; 6. Sleeve; 7. Connecting block; 8. Limiting protrusion; 9. Housing; 10. Placement hole; 11. Snap-fit ​​hole; 12. Gripping protrusion; 13. Snap-fit ​​protrusion; 14. Elastic sheet; 15. First mounting groove; 16. Limiting block; 17. Connecting groove; 18. Limiting plate; 19. Snap-fit ​​groove. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] The purpose of this invention is to provide a foldable handle and drawer base to solve the problems existing in the prior art. It can realize the switching between working and non-working states of the handle without disassembly, thereby improving work efficiency.

[0041] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Please refer to Figures 1-14The foldable handle disclosed in this embodiment of the present invention includes: a rotating arm 1, an action arm 2, and a driving arm 3; wherein, the first end of the rotating arm 1 is provided with a snap-fit ​​connector for engaging with a snap-fit ​​hole 11 on the driven component; the first end of the action arm 2 is rotatably connected to the second end of the rotating arm 1; the axis of the first rotation center of the action arm 2 is perpendicular to the axis of the rotating arm 1; the first end of the action arm 2 is provided with a first limiting structure for limiting the rotation angle of the rotating arm 1; the first end of the driving arm 3 is provided with a mounting portion 4 extending radially along the driving arm 3; the second end of the action arm 2 is rotatably connected to the mounting portion 4; the axis of the second rotation center of the driving arm 3 is perpendicular to the axis of the action arm 2; the mounting portion 4 is provided with a second limiting structure for limiting the rotation angle of the action arm 2; the axis of the second rotation center is parallel to the axis of the first rotation center; the first limiting structure and the second limiting structure enable the rotating arm 1, the action arm 2, and the driving arm 3 to form a Z-shape; its working principle is as follows: the first limiting structure is located at... On the rotation path of rotating arm 1, pushing rotating arm 1 to rotate relative to actuating arm 2 until rotating arm 1 abuts against the first limiting structure can keep rotating arm 1 and actuating arm 2 at a fixed angle. The second limiting structure is located on the rotation path of actuating arm 2, pushing actuating arm 2 to rotate relative to driving arm 3 until actuating arm 2 abuts against the second limiting structure can keep actuating arm 2 and rotating arm 1 at a certain angle. At this time, rotating arm 1, actuating arm 2 and driving arm 3 form a Z-shape, and the foldable handle is in the working posture, so that the driven component can be powered by rotating the handle. When it is not needed, pushing driving arm 3 in the opposite direction can make driving arm 3 and actuating arm 2 gradually become parallel, thus realizing the folding of driving arm 3. It can meet the storage or transportation requirements without disassembling the three. Compared with setting rotating arm 1, actuating arm 2 and driving arm 3 as detachable, there is no need to temporarily splice them when using, which reduces operation time, improves work efficiency and avoids the problem of lost parts.

[0043] In this embodiment, along the direction perpendicular to the axis of the drive arm 3, the distance between the second rotation center and the axis of the drive arm 3 allows the drive arm 3 to rotate to a state parallel to the action arm 2. In this state, the second end of the drive arm 3 is located near the first end of the action arm 2, and the first end of the drive arm 3 is located near the second end of the action arm 2. Specifically, when the action arm 2 is a rod, the radial middle part of the action arm 2 is rotatably connected to the drive arm 3. Then, along the direction perpendicular to the axis of the drive arm 3, the distance between the second rotation center and the axis of the drive arm 3 is not less than the radius of the action arm 2. That is to say, the space between the second rotation center and the axis of the drive arm 3 can accommodate the part of the action arm 2 located on the side of the second rotation center near the drive arm 3. When the drive arm 3 is parallel to the action arm 2, the space occupied is minimized, further optimizing the folding effect of the handle.

[0044] In this embodiment, the second end of the actuating arm 2 is provided with a second mounting groove 5 extending axially along the actuating arm 2. The second mounting groove 5 penetrates the actuating arm 2 radially. The mounting part 4 extends into the second mounting groove 5. The actuating arm 2 and the driving arm 3 are rotatably connected by a pin shaft arranged along the line connecting the mounting part 4 and the second mounting groove 5.

[0045] Furthermore, the first end of the actuating arm 2 is provided with a first mounting groove 15 extending axially along the actuating arm 2. The first mounting groove 15 penetrates the actuating arm 2 radially, and the rotating arm 1 can abut against the bottom of the first mounting groove 15. At this time, the bottom of the first mounting groove 15 serves as a first limiting structure, which optimizes the structural design of the device and reduces the complexity of the device. Of course, a stop fixed on the actuating arm 2 can also be used as the first limiting structure.

[0046] In this embodiment, the drive arm 3 is a plate-shaped structure, and the mounting part 4 is integrally formed with the drive arm 3 and is also a plate-shaped structure. During production, the drive arm 3 can be obtained by directly selecting a plate of appropriate thickness and turning it, which reduces the processing difficulty.

[0047] In this embodiment, the second limiting structure is a limiting block 16 with a certain thickness. A connecting groove 17 is provided in the middle of the limiting block 16. The connecting groove 17 is fastened to the plate-shaped mounting part 4. Corresponding bolt holes are provided on the mounting part 4 and the limiting block 16, so that the limiting block 16 can be installed on the mounting part 4 by bolt structure. Furthermore, an avoidance groove can be provided on the limiting block 16 to prevent the limiting block 16 from interfering with the actuating arm 2.

[0048] In this embodiment, the foldable handle also includes a sleeve 6. The second end of the drive arm 3 extends into the sleeve 6. The drive arm 3 and the sleeve 6 are rotatably connected. When in use, the operator can directly hold the sleeve 6 and shake it. The sleeve 6 and the drive arm 3 can rotate relative to each other, making the use of the foldable handle more convenient.

[0049] In this embodiment, a connecting block 7 is provided at the second end of the drive arm 3. The second end of the drive arm 3 extends into the sleeve 6 from the first end of the sleeve 6, and the connecting block 7 extends out from the second end of the sleeve 6. A third limiting structure is provided radially for limiting the axial movement of the connecting block 7. The third limiting structure can effectively prevent the sleeve 6 from detaching from the drive arm 3.

[0050] In this embodiment, the connecting block 7 and the drive arm 3 are integrally formed. The drive arm 3 is made of deformable metal. When the connecting block 7 extends from the second end of the sleeve 6, it can be hammered to cause radial deformation of the connecting block 7. At this time, the part of the connecting block 7 that deforms radially serves as a third limiting structure and is engaged with the second end of the sleeve 6. That is, the connecting block 7 forms a riveting structure to connect the sleeve 6 and the drive arm 3 together to prevent the sleeve 6 from coming off.

[0051] Furthermore, a limiting plate 18 is provided at the second end of the sleeve 6. The limiting plate 18 is connected to the end of the sleeve 6. A through hole with a size matching the connecting block 7 is opened in the middle of the limiting plate 18. This ensures that the sleeve 6 and the limiting plate 18 can be connected with a small deformation of the connecting block 7.

[0052] In this embodiment, the third limiting structure can also be a pin structure. Specifically, the connecting block 7 has a through hole in the radial direction. When the connecting block 7 extends from the second end of the sleeve 6, the pin structure is inserted into the through hole of the connecting block 7. The two ends of the pin abut against the ends of the sleeve 6, thereby realizing the connection between the sleeve 6 and the drive arm 3.

[0053] In this embodiment, a limiting protrusion 8 is provided on the drive arm 3. The limiting protrusion 8 extends radially away from the axis of the drive arm 3. The limiting protrusion 8 is located between the first end and the second end of the drive part. The length between the limiting protrusion 8 and the connecting block 7 matches the axial length of the sleeve 6. The limiting protrusion 8 can prevent the sleeve 6 from moving towards the first end of the drive arm 3, thereby realizing the restriction of the sleeve 6 to a fixed area by the limiting protrusion 8 and the connecting block 7.

[0054] This utility model embodiment also provides a drawer base, including: a housing 9, the aforementioned foldable handle, and a driven component; wherein, the housing 9 is provided with a placement hole 10, the foldable handle is stored in the placement hole 10, the driven component is installed in the housing 9, and the driven component is provided with a snap-fit ​​hole 11 exposed on the surface of the housing 9, the snap-fit ​​hole 11 is used to snap-fit ​​with a snap-fit ​​connector, in use, the foldable handle is taken out from the placement hole 10 and unfolded to a Z-shaped working state, the snap-fit ​​connector is inserted into the snap-fit ​​hole 11, and rotating the handle can provide driving force to the structure inside the snap-fit ​​hole 11, when not in use, the drive arm 3 is adjusted to a folded state parallel to the action arm 2, the rotating arm 1 is adjusted to a position coaxial with the action arm 2, and the foldable handle can be reinserted into the placement hole 10, along the axial direction of the placement hole 10, the size of the housing 9 matches the size of the foldable handle.

[0055] In this embodiment, along the axial direction of the drive arm 3, a gripping protrusion 12 is provided on the side of the mounting part 4 away from the drive arm 3. The gripping protrusion 12 can extend along the axial direction of the drive arm 3 to the outside of the placement hole 10. The operator can more conveniently remove the foldable handle from the placement hole 10 by using the gripping protrusion 12.

[0056] In this embodiment, the gripping protrusion 12 is integrally formed with the second limiting structure. Specifically, the limiting block 16 serves as the second limiting structure, and the gripping protrusion 12 is located on the side of the limiting block 16 away from the drive arm 3 along the axial direction, thus optimizing the structural design of the device. Furthermore, the gripping protrusion 12 is provided with an anti-slip part.

[0057] In this embodiment, a snap-fit ​​protrusion 13 that can extend and retract radially along the placement hole 10 is provided inside the placement hole 10, and a snap-fit ​​groove 19 that matches the snap-fit ​​protrusion 13 is provided on the side wall of the drive arm 3. When the foldable handle is stored in the placement hole 10, the snap-fit ​​protrusion 13 can extend into the snap-fit ​​groove 19 to prevent the foldable handle from falling out of the placement hole 10. Compared with the prior art solution of setting a rubber ring on the handle to prevent the handle from falling out of the placement hole, this structure has the advantages of reliable connection and long service life.

[0058] Preferably, when the drive arm 3 is provided with a sleeve 6, the snap-fit ​​groove 19 is provided on the sleeve 6.

[0059] In this embodiment, an elastic sheet 14 is provided inside the housing 9. The elastic sheet 14 extends along the axial direction of the placement hole 10 and can generate elastic deformation along the radial direction of the placement hole 10. The snap-fit ​​protrusion 13 is installed on the elastic sheet 14. When the foldable handle is pulled outward, the outer wall of the drive arm 3 can provide a thrust to the snap-fit ​​protrusion 13 away from the axis of the drive arm 3, thereby causing the elastic sheet 14 to deform in a direction away from the axis of the drive arm 3, so that the foldable handle can be taken out.

[0060] In this embodiment, guide slopes are provided on both sides of the snap-fit ​​protrusion 13 along the axial direction of the placement hole 10 to facilitate the insertion and removal of the foldable handle. Furthermore, the two ends of the snap-fit ​​groove 19 are chamfered along the axial direction of the drive arm 3, which facilitates the removal of the foldable handle and avoids stress concentration in dead corner positions.

[0061] It is understood that the rotating connections in this utility model can all be achieved by means of pin connection or bolt connection, which is the prior art and will not be described in detail here.

[0062] In this embodiment, the actuating arm 2 is a rod-shaped structure.

[0063] In this embodiment, the rotating arm 1 is a hexagonal bar, and the snap-fit ​​hole 11 is an internal hexagonal snap-fit ​​hole 11.

[0064] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A foldable handle, characterized in that, include: Rotating arm (1), the first end of the rotating arm (1) is provided with a snap connector, the snap connector is used to cooperate with the snap hole (11) on the driven member; The first end of the action arm (2) is rotatably connected to the second end of the rotating arm (1), the axis of the first rotation center of the action arm (2) is perpendicular to the axis of the rotating arm (1), and the first end of the action arm (2) is provided with a first limiting structure for limiting the rotation angle of the rotating arm (1). A drive arm (3) is provided with a mounting part (4) extending radially along the drive arm (3) at its first end. The second end of the action arm (2) is rotatably connected to the mounting part (4). The axis of the second rotation center of the drive arm (3) is perpendicular to the axis of the action arm (2). The mounting part (4) is provided with a second limiting structure for limiting the rotation angle of the action arm (2). The axis of the second rotation center is parallel to the axis of the first rotation center. The first limiting structure and the second limiting structure enable the rotating arm (1), the action arm (2) and the drive arm (3) to form a Z-shape.

2. The foldable handle according to claim 1, characterized in that, The second end of the actuating arm (2) is provided with a second mounting groove (5) extending along the axial direction of the actuating arm (2). The second mounting groove (5) penetrates the actuating arm (2) radially. The mounting part (4) extends into the second mounting groove (5). The actuating arm (2) and the driving arm (3) are rotatably connected by a pin arranged along the line connecting the mounting part (4) and the second mounting groove (5).

3. The foldable handle according to claim 1, characterized in that, The drive arm (3) has a plate-like structure.

4. The foldable handle according to claim 3, characterized in that, It also includes a sleeve (6), the second end of the drive arm (3) extends into the sleeve (6), and the drive arm (3) is rotatably connected to the sleeve (6).

5. The foldable handle according to claim 4, characterized in that, The second end of the drive arm (3) is provided with a connecting block (7). The second end of the drive arm (3) extends into the sleeve (6) from the first end of the sleeve (6). The connecting block (7) extends out from the second end of the sleeve (6). The connecting block (7) is provided with a third limiting structure in the radial direction to restrict the axial movement of the connecting block (7).

6. The foldable handle according to claim 5, characterized in that, The drive arm (3) is provided with a limiting protrusion (8), which extends radially away from the axis of the drive arm (3) and is used to prevent the sleeve (6) from moving toward the first end of the drive arm (3).

7. A drawer base, characterized in that, include: A housing (9) having a placement hole (10) thereon; The foldable handle according to claims 1-6, wherein the foldable handle is placed in the placement hole (10); A driven component is installed inside the housing (9). The driven component has a snap-fit ​​hole (11) exposed on the surface of the housing (9). The snap-fit ​​hole (11) is used to snap-fit ​​with the snap-fit ​​connector.

8. The drawer base according to claim 7, characterized in that, Along the axial direction of the drive arm (3), the mounting part (4) is provided with a gripping protrusion (12) on the side away from the drive arm (3), and the gripping protrusion (12) can extend along the axial direction of the drive arm (3) to the outside of the placement hole (10).

9. The drawer base according to claim 7, characterized in that, The placement hole (10) is provided with a snap-fit ​​protrusion (13) that can extend and retract radially along the placement hole (10), and the side wall of the drive arm (3) is provided with a snap-fit ​​groove that matches the snap-fit ​​protrusion (13).

10. The drawer base according to claim 9, characterized in that, An elastic sheet (14) is provided inside the housing (9). The elastic sheet (14) extends along the axial direction of the placement hole (10). The elastic sheet (14) can generate elastic deformation along the radial direction of the placement hole (10). The snap-fit ​​protrusion (13) is installed on the elastic sheet (14).

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