Transmission arm

Abstract

The utility model discloses a transmission arm which comprises a rotating flange and a rotating fork assembly. The rotary fork assembly comprises at least one guide plate, the guide plate is provided with a stroke groove, and the guide plate is arranged on the rotary flange; the axis of the rotating flange serves as a first base line, the center line of the stroke groove serves as a second base line, a plane parallel to the first base line and the second base line is defined as a projection plane, and projections of the first base line and the second base line on the projection plane form an included angle. Linear and circumferential combined three-dimensional driving is achieved through the same power source.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission equipment field especially relates to a transmission arm. BACKGROUND

[0002] Various transmission structures are usually arranged in various mechanical equipment to be used for the realization of various functional actions.

[0003] Therefore, the components of the overall transmission mechanism are too many, and the overall structure is not simple and compact, which is not conducive to the control of manufacturing cost. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a transmission arm to realize the combined three-dimensional driving of linear and circumferential by the same power source.

[0005] The utility model discloses a transmission arm which comprises a rotating flange and a turning fork assembly.

[0006] The transmission arm further comprises at least one guide plate, wherein the guide plate is provided with a stroke slot, and the guide plate is arranged on the rotating flange.

[0007] The stroke slot is arranged along the length direction of the guide plate, and the open end of the stroke slot is away from the rotating flange.

[0008] The axis of the rotating flange is defined as a first baseline, the center line of the stroke slot is defined as a second baseline, and a plane parallel to the first baseline and the second baseline is defined as a projection plane.

[0009] Further, one end of the guide plate is connected to the rotating flange, the stroke slot is arranged along the length direction of the guide plate, and the open end of the stroke slot is away from the rotating flange.

[0010] Further, the open end of the stroke slot is provided with a buffer section, and the width of the buffer section gradually increases from inside to outside.

[0011] Further, the rotating flange comprises a base body and two end plates, the guide plate is arranged on the base body, and the two end plates are respectively arranged on one end of the base body to surround both sides of the guide plate.

[0012] The utility model further comprises two isolation members, and the two isolation members are arranged on the base body and abut on the inner side wall of one end plate.

[0013] Further, the isolator is a thrust bearing.

[0014] Further, the base body is divided into a first section cylinder, a second section cylinder and a third section cylinder connected in sequence.

[0015] The guide plate is arranged at the end of the second section cylinder.

[0016] Further, the number of the guide plates is two, one guide plate is arranged at each end of the second section cylinder, and the stroke grooves of the two guide plates are arranged in alignment.

[0017] Further, the guide plate is detachably mounted to the end of the second section cylinder through a fixing member.

[0018] The fixing member is arranged along the direction of the first baseline, and the first section cylinder, the second section cylinder and the third section cylinder are hidden by the fixing member after being connected in sequence.

[0019] And / or, the first section cylinder, the second section cylinder, the third section cylinder and the two end plates are connected in series through at least one connecting member.

[0020] Further, the first section cylinder and the end plate away from one end of the second section cylinder are an integral structure.

[0021] And / or, the second section cylinder and the end plate away from one end of the second section cylinder are an integral structure.

[0022] Further, a mounting positioning protrusion is arranged on the outer wall of at least one end plate.

[0023] Or, in the direction of the first baseline, the middle part of the rotating flange is hollow.

[0024] In summary, the transmission arm provided by the utility model has the following technical effects:

[0025] In the utility model, the transmission member is arranged in the stroke groove and can be used as a linear driving source to drive the components or mechanisms requiring linear motion to complete linear motion when the transmission member is subjected to a linearly applied force. In addition, the transmission member moves in the stroke groove and pushes the guide plate, and the guide plate finally drives the rotating flange to rotate circumferentially. Conversely, if the rotating flange rotates after being subjected to a circumferential force, the guide plate pushes the transmission member at this time, and the transmission member moves in the stroke groove and completes linear motion. In summary, one power source can realize linear and circumferential motion, the setting of the power source is reduced, the entire transmission mechanism is more compact, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1The structural schematic view of the transmission arm of the utility model embodiment;

[0027] Figure 2 The sectional view of the transmission arm and the rotating longitudinal beam assembly of the utility model embodiment;

[0028] Figure 3 The top view of the transmission arm and the rotating longitudinal beam assembly of the utility model embodiment;

[0029] Figure 4 The perspective view of the transmission arm of the utility model embodiment. Figure 1

[0030] Wherein, the meaning of the reference signs is as follows:

[0031] 10, rotating flange; 11, base body; 111, first section cylinder; 112, second section cylinder; 113, third section cylinder; 12, end plate; 20, rotating fork assembly; 21, guide plate; 211, stroke groove; 201, buffer section; 30, isolation piece; 40, mounting positioning protrusion; 50, rotating longitudinal beam; 60, case rear plate; 70, fixing piece; 80, connecting piece. DETAILED DESCRIPTION

[0032] In order to better understand and implement, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0033] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0035] Referring to Figure 1 And Figure 4 The utility model discloses a kind of transmission arms, including rotating flange 10 and rotating fork assembly 20;Rotating fork assembly 20 includes at least one guide plate 21, guide plate 21 is provided with stroke groove 211, guide plate 21 is set on rotating flange 10;With the axis of rotating flange 10 as first baseline (such as Figure 4 ​In the middle a), the center line of the stroke slot 211 is the second baseline (as shown in Figure 4 In the middle b), the plane parallel to the first baseline and the second baseline is defined as the projection plane, and the projections of the first baseline and the second baseline on the projection plane form an included angle.

[0036] Wherein, the rotating flange 10 is cylindrical, preferably cylindrical. The outer contour of the guide plate 21 is rectangular structure, one end of the guide plate 21 is arranged on the rotating flange 10, and the other end is arranged along the radial direction of the rotating flange 10.

[0037] Taking one guide plate 21 as an example, preferably, the first baseline and the second baseline are perpendicular to each other and arranged in the same plane (at this time the first baseline and the second baseline are coplanar), and the width direction of the stroke slot 211 is perpendicular to the first baseline. Of course, in actual arrangement, the first baseline and the second baseline can also not be coplanar.

[0038] Referring to Figure 2 and Figure 3 The transmission arm is applied to the circuit breaker of the electrical equipment. It should be noted that the circuit breaker includes a lead screw assembly, a rotating longitudinal beam 50 and a cabinet. The cabinet includes a support (not shown) and two cabinet back plates 60, and the lead screw assembly includes a lead screw and a moving table moving on the lead screw. First, the rotating longitudinal beam 50 is rotatably arranged on the support, and a pole is arranged on the rotating longitudinal beam 50. The two cabinet back plates 60 are arranged side by side on the support and located at one end of the rotating longitudinal beam 50, and support holes are arranged on the two cabinet back plates 60.

[0039] The focus of the embodiment is that one end of the rotating flange 10 is fixedly connected with one end of the rotating longitudinal beam 50. The two ends of the rotating flange 10 are respectively inserted into the support holes of one cabinet back plate 60, and the rotating flange 10 rotates in the support hole (it can be understood that the rotating longitudinal beam 50 is rotatably arranged on the cabinet back plate 60 through the rotating flange 10), and the guide plate 21 is located between the two cabinet back plates 60. The lead screw is arranged from one side of the rotating flange 10, and the axial direction of the lead screw is perpendicular to the first baseline. The moving table is inserted into the stroke slot through the latch. It can be known that other components that need to be driven (especially linear motion) are connected to the moving table.

[0040] In the initial state, the pole is in the closing connection state, and at this time the latch is located at the bottom of the stroke slot 211 (close to one end of the rotating flange 10). When the pole needs to be isolated and opened, the lead screw is rotated by an external power source, the moving table moves on the lead screw and pushes the rotating flange 10 to rotate, and the latch moves from the top end of the stroke slot 211 (far from one end of the rotating flange 10) at the same time, so that the latch and the guide plate 21 will not be stuck. At this time, the rotating flange 10 is used to drive the components that need to be axially rotated to rotate.

[0041] It should be noted that the rotating flange 10 rotates a certain angle to achieve the isolation of the pole, and the moving platform stops moving. During this process, the pin is always in the stroke slot 211. When the moving platform moves reversely and returns to the initial state, the rotating flange 10 follows the rotation and returns to the initial position.

[0042] The lead screw can be replaced by a telescopic cylinder, and the outer end of the telescopic rod is provided with a mounting seat equivalent to the moving platform.

[0043] Conversely, if a rotating power is given to the rotating flange 10, the rotating flange 10 can drive the moving platform to move linearly while completing the rotation, and the moving platform can be replaced by a platform arranged on the slide rail.

[0044] Optionally, one end of the guide plate 21 is connected to the rotating flange 10, the stroke slot 211 is arranged along the length direction of the guide plate 21, and the end of the stroke slot 211 away from the rotating flange 10 is an open end.

[0045] Preferably, the open end is arranged at the end of the guide plate 21 away from the rotating flange 10. The open end is arranged to facilitate the installation or removal of the pin from the position, thereby improving the assembly efficiency.

[0046] In addition, the open end of the stroke slot 211 can be arranged on the side wall of the stroke slot 211, so that the opening of the open end can be hidden to prevent the collision of the edge of the opening.

[0047] Optionally, the open end of the stroke slot 211 is provided with a buffer section 201, and the width of the buffer section 201 gradually increases from inside to outside.

[0048] Preferably, the open end is arranged at the end of the guide plate 21 away from the rotating flange 10. The side wall of the buffer section 201 of the present embodiment is arranged as an inclined surface, which prevents the pin from colliding with the side wall of the stroke slot 211 when the pin is installed in the stroke slot 211. In addition, the width of the buffer section 201 is larger, which is more convenient for the installation of the pin.

[0049] In addition, the outer side of the end of the guide plate 21 away from the rotating flange 10 is also arranged as an inclined angle. According to the rotating movement characteristics of the rotating flange 10, the inclined angle of the outer side eliminates the sharp angle of the end, avoids the collision between the top end of the guide plate 21 and other components during the rotation of the guide plate 21, and prevents the problem of sharp angle collapse.

[0050] Optionally, the rotating flange 10 comprises a base body 11 and two end plates 12, the guide plate 21 is arranged on the base body 11, and the two end plates 12 are respectively arranged on one end of the base body 11 to surround both sides of the guide plate 21. The rotating flange 10 further comprises two isolation pieces 30, and the two isolation pieces 30 are arranged on the base body 11. One isolation piece 30 is abutted and arranged on the inner side wall of one end plate 12.

[0051] In combination with the foregoing, the base body 11 of the embodiment is used as a support hole mounted on the chassis rear plate 60, and two chassis rear plates 60 are located between the two end plates 12. As can be seen, the two end plates 12 are axially limited in the axial direction of the base body 11, preventing the base body 11 from falling out of the support hole. On the other hand, the base body 11 needs to be rotated, and in order to prevent the base body 11 from being displaced in the axial direction, the two end plates 12 need to abut the outer side of the nearest chassis rear plate 60 respectively, but the abutment arrangement will generate friction during rotation. The embodiment provides a spacer 30 on the inner side wall of the end plate 12, which is used to reduce the friction and improve the stability of the rotation of the rotating flange 10. In addition, the end plate 12 and the base body 11 can be connected by welding or bonding.

[0052] Optionally, the spacer 30 is a thrust bearing.

[0053] Optionally, the spacer 30 is a thrust bearing.

[0054] Optionally, the base body 11 is divided into a first section cylinder 111, a second section cylinder 112, and a third section cylinder 113 connected in sequence; and the guide plate 21 is arranged at the end of the second section cylinder 112.

[0055] Optionally, the base body 11 is divided into a first section cylinder 111, a second section cylinder 112, and a third section cylinder 113 connected in sequence; and the guide plate 21 is arranged at the end of the second section cylinder 112.

[0056] Optionally, the number of guide plates 21 is two, and one guide plate 21 is arranged at each end of the second section cylinder 112, and the two travel grooves 211 of the two guide plates 21 are arranged in alignment.

[0057] Optionally, the number of guide plates 21 is two, and one guide plate 21 is arranged at each end of the second section cylinder 112, and the two travel grooves 211 of the two guide plates 21 are arranged in alignment.

[0058] Optionally, the guide plate 21 is detachably mounted to the end of the second section cylinder 112 through a fixing member 70; and the fixing member 70 is arranged along the direction of the first baseline, and the first section cylinder 111, the second section cylinder 112 and the third section cylinder 113 are sequentially connected to hide the fixing member 70; and / or the first section cylinder 111, the second section cylinder 112, the third section cylinder 113 and the two end plates 12 are connected in series through at least one connecting member 80.

[0059] In this embodiment, the connection between the guide plate 21 and the second section cylinder 112 is described. The fixing member 70 can be a bolt or a countersunk screw. After the fixing member 70 passes through the guide plate 21, it is screwed onto the second section cylinder 112. After screwing, the head of the fixing member 70 may protrude from the end of the second section cylinder 112, which is not conducive to the subsequent installation of the first section cylinder 111 and the third section cylinder 113. To solve this problem, the embodiment can choose to set a counterbore in the guide plate 21 to hide the head of the fixing member 70, or set a receiving hole in the end of the first section cylinder or the third section cylinder 113. When the first section cylinder 111 and the third section cylinder 113 are spliced to the end of the second section cylinder 112, the receiving hole can be sleeved on the head of the fixing member 70, so that the fixing member 70 is hidden by the receiving hole. The guide plate 21 is connected to the second section cylinder 112 by screwing, which is more conducive to the disassembly and assembly of the guide plate 21.

[0060] In addition, the connecting member 80 can be a bolt, a pin or a rivet, and the first section cylinder 111, the second section cylinder 112, the third section cylinder 113 and the two end plates 12 are detachably connected through the connecting member 80. Preferably, a plurality of connecting members 80 are used to connect the first section cylinder 111, the second section cylinder 112, the third section cylinder 113 and the two end plates 12, so as to improve the connection reliability of the connected members.

[0061] Optionally, the first section cylinder 111 and the end plate 12 away from the second section cylinder 112 are an integral structure; and / or the second section cylinder 112 and the end plate 12 away from the second section cylinder 112 are an integral structure.

[0062] In addition, the first section cylinder 111 and the third section cylinder 113 are integrally formed with the nearest end plate 12 at one end of each, which can appropriately reduce the number of parts, avoid the loss of parts, and improve the connection strength between the two.

[0063] In particular, the transmission arm of the embodiment is connected to the rotating longitudinal beam 50 through the end plate 12. The outer end surface area of the end plate 12 connected to the rotating longitudinal beam 50 is larger, so as to increase the connection area and improve the connection reliability.

[0064] Optionally, the outer wall of the at least one end plate 12 is provided with a mounting positioning protrusion 40.

[0065] The mounting positioning protrusion 40 can be in a circular structure, and one end of the rotating longitudinal beam 50 is provided with a positioning groove matched with the mounting positioning protrusion 40, and the two are matched and mounted, so as to facilitate the quick mounting of the rotating flange 10.

[0066] Optionally, the middle part of the rotating flange 10 is hollow along the direction of the first baseline.

[0067] The hollow of the rotating flange 10 can be provided with, but is not limited to, a circular hole or a polygonal hole, and the hollow structure can be used as an access for other rotating shafts, so as to realize the rotation of multiple shafts.

[0068] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be pointed out that for ordinary skilled persons in the art, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements are also considered as the protection scope of the utility model.

Claims

1. A drive arm, characterized in that The rotating flange (10) and the rotating fork assembly (20) are included. The rotating fork assembly (20) includes at least one guide plate (21) provided with a stroke slot (211), and the guide plate (21) is arranged on the rotating flange (10). The axis of the rotating flange (10) is taken as a first baseline, the center line of the stroke slot (211) is taken as a second baseline, a plane parallel to the first baseline and the second baseline is defined as a projection plane, and the projections of the first baseline and the second baseline on the projection plane form an included angle.

2. The drive arm of claim 1, wherein One end of the guide plate (21) is connected to the rotating flange (10), the stroke slot (211) is arranged along the length direction of the guide plate (21), and the end of the stroke slot (211) away from the rotating flange (10) is an open end.

3. The drive arm of claim 1, wherein, The open end of the stroke slot (211) is provided with a buffer section (201), and the width of the buffer section (201) gradually increases from inside to outside.

4. A transmission arm according to any one of claims 1-3, characterised in that The rotating flange (10) includes a base body (11) and two end plates (12), the guide plate (21) is arranged on the base body (11), and the two end plates (12) are arranged on one end of the base body (11) respectively to surround both sides of the guide plate (21). Two isolation pieces (30) are further included, and one of the isolation pieces (30) is arranged on the base body (11) and abuts against the inner side wall of one of the end plates (12).

5. The drive arm of claim 4, wherein, The isolation piece (30) is a thrust bearing.

6. The drive arm of claim 4, wherein, The base body (11) is divided into a first section cylinder (111), a second section cylinder (112) and a third section cylinder (113) connected in sequence. The guide plate (21) is arranged at the end of the second section cylinder (112).

7. The drive arm of claim 6, wherein, The number of the guide plates (21) is two, one of the guide plates (21) is arranged at each end of the second section cylinder (112), and the stroke slots (211) of the two guide plates (21) are arranged in alignment.

8. The drive arm of claim 7, wherein, The guide plate (21) is detachably mounted to the end of the second section cylinder (112) through a fixing piece (70). The fixing piece (70) is arranged along the direction of the first baseline, and the first section cylinder (111), the second section cylinder (112) and the third section cylinder (113) are hidden after being connected in sequence. The first section cylinder (111), the second section cylinder (112), the third section cylinder (113) and the two end plates (12) are connected in series through at least one connecting piece (80).

9. A transmission arm according to any one of claims 6 to 8, wherein, The first section cylinder (111) and the end plate (12) away from one end of the second section cylinder (112) are in an integral structure. The second section cylinder (112) and the end plate (12) away from one end of the second section cylinder (112) are in an integral structure.

10. The drive arm of claim 4, wherein, An installation positioning protrusion (40) is arranged on the outer wall of at least one of the end plates (12). Or, in the direction of the first baseline, the middle part of the rotating flange (10) is hollow.

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