Multi-degree of freedom manually operated mechanism

Abstract

A multi-degree-of-freedom manual operating mechanism comprises a support assembly and an operating lever; the support assembly comprises a frame, a shaft body, a transmission mechanism and a sliding block mechanism; the shaft body comprises a connecting rod and a cover arranged on the upper side of the connecting rod; the connecting rod is rotatably arranged relative to the frame; the cover is connected with the connecting rod through a fastening screw; the cover is axially slidingly matched with the connecting rod; an elastic element is arranged between the cover and the connecting rod; and a gap L2 is arranged between the cover and the outer wall of the fastening screw. By utilizing the movable gap between the cover and the connecting rod, after the product is correctly assembled, the cover and the connecting rod have a certain up-down and left-right moving space under the action of the compression spring force, a certain degree of up-down and left-right rotation is realized, and the error is corrected through the shaking of the cover when the shaft body and the cabinet door handle hole position are not correct.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a multi-degree-of-freedom manual operating mechanism. Background Technology

[0002] Molded case circuit breakers (MCCBs) are sometimes installed inside distribution cabinets. To facilitate the opening and closing of these MCCBs, a manual operating mechanism is typically configured, allowing control of the MCCBs inside the distribution cabinet without opening the cabinet door. For example, an external operating mechanism for circuit breakers is disclosed in patent document CN212587428U.

[0003] To achieve the above features, it is generally necessary to set corresponding holes on the cabinet door so that the holes on the cabinet door can be aligned with the manual operation mechanism when the cabinet door is closed. However, due to the large range of assembly error fluctuations in the distribution cabinet door, there is a deviation between the two when the cabinet door is closed, which leads to the phenomenon of misalignment during installation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-degree-of-freedom manual operation mechanism.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A multi-degree-of-freedom manual operating mechanism includes a support assembly and an operating lever; the lower side of the support assembly is mounted on the outside of the housing of the switch product, and the operating lever is disposed on the upper side of the support assembly; the support assembly includes:

[0007] frame;

[0008] A shaft is disposed on the upper side of the frame and can rotate relative to the frame under the action of external force;

[0009] A transmission mechanism, the upper side of which is fixedly connected to the shaft;

[0010] The slider mechanism has a mating groove adapted to the operating handle of the switch product. One end of the slider mechanism is connected to the frame, and the other end is linked to the transmission mechanism. The slider mechanism can rotate around the connection end with the frame as the axis under the drive of the transmission mechanism.

[0011] The shaft includes a connecting rod mounted on a frame and a cover sleeved on the upper side of the connecting rod. The connecting rod is rotatably mounted relative to the frame, and the cover is connected to the connecting rod by fastening screws. The cover slides axially relative to the connecting rod, and an elastic element is provided between the cover and the connecting rod. A gap L2 is provided between the cover and the outer wall of the fastening screw.

[0012] The outer wall of the connecting rod is provided with a plurality of toothed grooves in the circumferential direction, and the inner wall of the cover is provided with teeth that are adapted to the toothed grooves.

[0013] The bottom of the connecting rod is provided with a torsion spring groove, a torsion spring is provided in the torsion spring groove, and a limiting boss is provided around the torsion spring groove. One end of the torsion spring overlaps with one end of the limiting boss.

[0014] The transmission mechanism includes a traction rod and a guide plate.

[0015] One end of the traction rod protrudes outward and has a protrusion at the protruding position. The bottom of the frame has a corresponding sliding groove, and the protrusion can be slidably disposed in the sliding groove.

[0016] One end of the guide plate is fixedly connected to the traction plate, and the other end of the guide plate is provided with a guide groove. One end of the slider mechanism is provided with a guide block, and the guide block can be slidably disposed in the guide groove.

[0017] The slider mechanism includes a transmission plate with a mating groove and rollers on both sides of the mating groove.

[0018] The beneficial effects of this utility model are as follows: By utilizing the movable gap between the cover and the connecting rod, after the product is correctly assembled, the cover and the connecting rod have a certain amount of up-down and left-right movable space under the action of the compression spring force, so as to achieve a certain degree of up-down and left-right rotation. This solves the problem of the error being corrected by shaking the cover when the shaft and the door handle hole are not aligned. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model (top side).

[0021] Figure 3 This is a schematic diagram of the structure of this utility model (bottom side).

[0022] Figure 4 This is a cross-sectional schematic diagram of the present invention.

[0023] Figure 5 This is a cross-sectional schematic diagram of the shaft of this utility model.

[0024] Figure 6 This is an exploded view of the shaft of this utility model.

[0025] Figure 7 This is an exploded view of the transmission mechanism of this utility model.

[0026] Figure 8 This is a schematic diagram of the transmission mechanism. Detailed Implementation

[0027] 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.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] like Figure 1 As shown, a multi-degree-of-freedom manual operating mechanism includes a support assembly 100 and an operating lever. The lower side of the support assembly 100 is mounted on the outside of the housing of the switch product, and the operating lever is pivotally connected to the upper side of the support assembly 100. It is mainly used for operating the switch product inside the cabinet from outside the cabinet. The operating handle is detachably connected to the operating lever, wherein the operating lever is a square shaft, which is inserted into the shaft body and secured.

[0030] like Figure 2 , Figure 3 and Figure 4 As shown, the support assembly 100 includes:

[0031] The frame 110 is formed by bending sheet metal, with fixed positions at both ends for fixed connection with the housing of the switch product.

[0032] The shaft 120 is rotatably mounted on the frame 110. The shaft 120 can be driven to rotate relative to the frame by the operating lever. The shaft passes through the lower part of the frame and its bottom is fixed by the transmission mechanism, thereby being fixedly connected to the frame.

[0033] The transmission mechanism 130 is fixedly connected to the shaft 120 on its upper side, and transmits the rotation of the shaft to the slider mechanism;

[0034] The slider mechanism 140 is provided with a mating groove 141 that is adapted to the operating handle of the switch product. One end of the slider mechanism is connected to the frame 110 and is fixed by a screw in this embodiment, so that it can rotate relative to the screw axis. The other end of the slider mechanism is linked with the transmission mechanism 130 to ensure that the driven mechanism is driven to rotate relative to the axis, thereby driving the operating handle to move.

[0035] The upper direction is Figure 4 The direction of the middle arrow.

[0036] The shaft 120 includes a connecting rod 121 rotatably mounted on the frame 110 and a cover 122 sleeved on the upper side of the connecting rod 121. The cover 122 is connected to the connecting rod 121 by a fastening screw 123. The cover 122 slides axially relative to the connecting rod 121, and an elastic element 124 is provided between the cover 122 and the connecting rod 121. A gap L2 is provided between the cover 122 and the outer wall of the fastening screw 123. Figure 5 As shown, there is a gap L1 between the cover and the connecting rod. When the cover is not aligned, it will be pressed downwards. The position of the cover can be adjusted to make it aligned. Multiple degrees of freedom can be adjusted through gaps L1 and L2.

[0037] like Figure 6 As shown, the outer wall of the connecting rod 121 is provided with a plurality of toothed grooves 126, and the inner wall of the cover 122 is provided with teeth 125 that are adapted to the toothed grooves 126. The teeth and toothed grooves cooperate to realize that the cover drives the connecting rod to rotate relative to each other.

[0038] like Figure 7 As shown, the bottom of the connecting rod 121 is provided with a torsion spring groove 127, and a torsion spring 129 is provided in the torsion spring groove 127. A limiting boss 128 is provided circumferentially in the torsion spring groove 127, and one end of the torsion spring 129 overlaps with one end of the limiting boss 128. The purpose of installing the torsion spring in the connecting rod is to increase the restoring force of the handle when the product moves from the closed to the tripped state, ensuring that the handle correctly indicates the switch body status. This is because the force generated by the circuit breaker switch opening is less than the rotational friction of the handle, resulting in an abnormal situation where the switch is actually in the open state, but the handle indicates that it is still closed.

[0039] like Figure 8 As shown, the transmission mechanism 130 includes a traction rod 131 and a guide plate 132, which are fixedly connected to the bottom of the connecting rod by screws and are used to transmit the kinetic energy of the connecting rod.

[0040] One end of the traction rod 131 protrudes outward, and a protrusion 134 is provided at the protruding position. The bottom of the frame 110 is provided with a corresponding sliding groove 150, and the protrusion 134 can be slidably disposed within the sliding groove 150. The traction rod utilizes the cooperation between the protrusion and the sliding groove to ensure the consistency of the rotation path, that is, the sliding groove 150 is an arc-shaped groove and is distributed with the center of the shaft as the center.

[0041] One end of the guide plate 132 is fixedly connected to the traction plate 131, and the other end of the guide plate is provided with a guide groove 133. One end of the slider mechanism 140 is provided with a guide block 143, and the guide block 143 can be slidably disposed in the guide groove 133.

[0042] The slider mechanism 140 includes a transmission plate with a mating groove 141 and rollers 142 on both sides of the mating groove 141. When the operating handle of the switch is placed in the mating groove 141, it is just locked by the rollers, thereby driving the operating handle to move relative to the rollers. Since one end of the transmission plate is hinged, the transmission mechanism drives the transmission plate to move. By utilizing the cooperation between the guide block and the guide groove, the transmission plate rotates relative to the hinge point.

[0043] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A multi-degree-of-freedom manual operating mechanism, comprising a support assembly (100) and an operating lever (200); the lower side of the support assembly (100) is mounted on the exterior of the housing of the switch product, and the operating lever (200) is disposed on the upper side of the support assembly (100); the support assembly (100) comprises: Rack (110); A shaft (120) is disposed on the upper side of the frame (110) and can rotate relative to the frame under the action of external force; A transmission mechanism (130) is fixedly connected to the shaft (120) on its upper side; The slider mechanism (140) is provided with a mating groove (141) adapted to the operating handle of the switch product. One end of the slider mechanism is connected to the frame (110), and the other end is linked to the transmission mechanism (130). The slider mechanism can rotate around the connection end with the frame as the axis under the drive of the transmission mechanism. The shaft (120) is characterized in that: the shaft (120) includes a connecting rod (121) disposed on the frame (110) and a cover (122) sleeved on the upper side of the connecting rod (121). The connecting rod (121) is rotatably disposed relative to the frame (110), and the cover (122) is connected to the connecting rod (121) by a fastening screw (123). The cover (122) is axially sliding relative to the connecting rod (121), and an elastic element (124) is provided between the cover (122) and the connecting rod (121). A gap L2 is provided between the cover (122) and the outer wall of the fastening screw (123).

2. A multi-degree of freedom manually operated mechanism according to claim 1, characterized in that: The outer wall of the connecting rod (121) is provided with a plurality of toothed grooves (126) in the circumferential direction, and the inner wall of the cover (122) is provided with teeth (125) that are adapted to the toothed grooves (126).

3. A multi-degree of freedom manually operated mechanism according to claim 1 or 2, characterised in that: The bottom of the connecting rod (121) is provided with a torsion spring groove (127), and a torsion spring (129) is provided in the torsion spring groove (127). A limiting boss (128) is provided in the circumferential direction of the torsion spring groove (127), and one end of the torsion spring (129) overlaps with one end of the limiting boss (128).

4. A multi-degree of freedom manually operated mechanism according to claim 1, wherein: The transmission mechanism (130) includes a traction rod (131) and a guide plate (132).

5. A multi-degree of freedom manually operated mechanism according to claim 4, wherein: One end of the traction rod (131) protrudes outward and a protrusion (134) is provided at the protrusion position. The bottom of the frame (110) is provided with a corresponding sliding groove (150), and the protrusion (134) can be slidably disposed in the sliding groove (150).

6. A multi-degree of freedom manually operated mechanism according to claim 4, wherein: One end of the guide plate (132) is fixedly connected to the traction plate (131), and the other end of the guide plate is provided with a guide groove (133). One end of the slider mechanism (140) is provided with a guide block (143), and the guide block (143) can be slidably disposed in the guide groove (133).

7. The multi-degree-of-freedom manual operating mechanism according to claim 1, characterized in that: The slider mechanism (140) includes a transmission plate, on which a mating groove (141) is provided, and rollers (142) are provided on both sides of the mating groove (141).

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