Mounting seat and handle operating device

Abstract

The embodiment of the utility model provides a mounting seat which comprises a base with a middle hole, the middle hole comprises a central axis, a plurality of bosses are arranged along the periphery of the middle hole in a circumferential array mode, each boss comprises a supporting face facing the direction of the central axis, each supporting face comprises a supporting area, and the supporting areas are arranged on the middle hole. The supporting area comprises a near end close to the middle hole and a far end away from the middle hole, the distance between the supporting area and the central axis is gradually increased from the near end to the far end, the mounting base is matched with the handle rod and the pressing and holding assembly, so that the handle rod has the capacity of being kept at the center position, and after the handle rod is operated, the handle rod can be pressed and held. According to the handle operating device, the handle rod can automatically return to the center, the operation flexibility or sensitivity can be flexibly adjusted, and meanwhile the utility model further provides the handle operating device applying the mounting base.

Description

Technical Field

[0001] This utility model belongs to the field of forklift technology, specifically relating to a handle operating device and mounting base for forklifts. Background Technology

[0002] Existing forklifts typically employ multi-way valve control mechanisms, such as those shown in documents CN220012038U and CN205099286U. In this type of structure, each control handle can only perform one action, operating and controlling one of the valves, resulting in poor operational flexibility.

[0003] To address the above issues, some improved operating methods employ multi-directional operating handles, such as the device shown in CN221917299U. These multi-directional operating handles typically have at least four operating modes, and a return mechanism is provided on the underside of the handle to keep it in the middle position. However, in practice, it has been found that existing multi-directional operating handles have insufficient return capability or poor flexibility. That is, after long-term use, they are prone to failure to return to the original position or failure to return to the correct position. Furthermore, the flexibility or sensitivity of operation cannot be easily adjusted.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] Therefore, this utility model provides a mounting base and handle operating device to solve the above-mentioned technical problems.

[0006] A mounting base includes a base with a central hole, the central hole including a central axis, and a plurality of bosses arranged in a circumferential array around the periphery of the central hole. Each boss includes a support surface facing the central axis, and the support surface includes a support area, which includes a proximal end adjacent to the central hole and a distal end away from the central hole. The distance between the support area and the central axis gradually increases from the proximal end to the distal end.

[0007] Here, a virtual base plane is defined perpendicular to the central axis, and the support area is inclined to the virtual base plane, with an inclination angle of 10° to 45° between the support area and the virtual base plane.

[0008] The supporting surface is an arc surface.

[0009] The support area is linear.

[0010] A virtual cone surface is defined as formed by rotating one of the support areas around the central axis. The support areas of each boss are located on the virtual cone surface. The virtual cone surface includes a vertex, which is located inside the central hole.

[0011] The platform includes a connecting platform between the bosses. The connecting platform includes a groove, and the groove includes a bottom surface. The bottom surface is inclined to the virtual base surface, and the vertical height of the side of the bottom surface adjacent to the central hole is greater than the vertical height of the side away from the central hole.

[0012] A handle operating device includes a handle rod, a holding assembly, and the aforementioned mounting base. The handle rod passes through a central hole. The holding assembly includes a slip ring, an upper holding plate, and a spring disposed between the upper holding plate and the slip ring. The slip ring is sleeved on the handle rod, with one side of the slip ring abutting against the support area. The spring and the upper holding plate are both sleeved on the handle rod. A nut is threaded onto the handle rod and abuts against the upper holding plate to compress the spring.

[0013] When the handle swings, the slip ring fitted on the handle moves along with it, creating a height difference between the two sides of the slip ring.

[0014] The nut is adjustable along the axis of the shank.

[0015] There are at least four bosses, and the number is an even number.

[0016] Beneficial effects: This utility model provides a mounting base, including a base with a central hole. The central hole includes a central axis, and a plurality of protrusions are arranged in a circumferential array around the central hole. Each protrusion includes a support surface facing the central axis. The support surface includes a support area, which includes a proximal end adjacent to the central hole and a distal end away from the central hole. The distance between the support area and the central axis gradually increases from the proximal end to the distal end. By using this mounting base in conjunction with a handle and a holding assembly, the handle has the ability to be kept in the center position. After the handle is operated, it has the ability to automatically return to the center. At the same time, the operational flexibility or sensitivity can be flexibly adjusted. This utility model also provides a handle operating device using the above-mentioned mounting base. Attached Figure Description

[0017] Figure 1 A three-dimensional schematic diagram of the mounting base according to an embodiment of this utility model;

[0018] Figure 2 for Figure 1 Top view;

[0019] Figure 3 for Figure 2 Schematic diagram of the AA section;

[0020] Figure 4 for Figure 2 Schematic diagram of the BB cross section;

[0021] Figure 5This is a schematic diagram of the handle operating device;

[0022] Figure 6 for Figure 5 Schematic diagram of the CC section;

[0023] Figure 7 A cross-sectional view at the CC position behind the operating handle.

[0024] Explanation of component symbols in the diagram:

[0025] Mounting base 10; base 100; central hole 20; central axis 201; virtual base surface 202; boss 30; support surface 31; support area 310; distal end 311; proximal end 312; connecting surface 32; virtual cone surface 33; vertex 331; connecting platform 40; groove 41; groove bottom surface 410; slip ring 50; spring 60; upper pressure plate 70; nut 80; handle 90; ball head 91. Detailed Implementation

[0026] Please refer to Figures 1-4 This utility model embodiment provides a mounting base 10 for mounting a handle 90 and other devices to form a handle operating device. The mounting base 10 includes a base 100, which is used to mount to a forklift operating table. It is understood that the base 100 is provided with mounting holes or screw holes to fix the base 100 to the forklift operating table. The position and size of the mounting holes or screw holes can be set according to actual needs, and will not be described in detail here.

[0027] The base 100 includes a central hole 20 for inserting the handle 90. It is understood that the diameter of the central hole 20 should be larger than the outer diameter of the handle 90 so that the handle 90 has suitable room for movement. At the same time, the shape of the central hole 20 is not limited, but preferably, the central hole 20 is centrally symmetrical.

[0028] The central hole 20 has a central axis 201, and a plurality of protrusions 30 are arranged in a circular array around the periphery of the central hole 20. Each protrusion 30 includes a support surface 31 facing the central axis 201. The support surface 31 includes a support area 310, which includes a proximal end 312 adjacent to the central hole 20 and a distal end 311 away from the central hole 20. The distance between the support area 310 and the central axis 201 gradually increases from the proximal end 312 to the distal end 311. It can be understood that if a virtual base surface 202 perpendicular to the central axis 201 is defined, the support area 310 is inclined to the virtual base surface 202. At the same time, since each protrusion 30 is arranged in a circular array, and the center of the circular array is located at the central axis 201, each support area 310 presents a shape where the proximal end 312 is low and the distal end 311 is high.

[0029] Furthermore, the tilt angle between the support area 310 and the virtual base surface 202 is 10° to 45°.

[0030] Please refer to this as well. Figures 5-7 ,exist Figure 5 The diagram shows a schematic of the device, such as the handle 90, mounted on the mounting base 10. Figure 6 and Figure 7 The diagram shows a cross-sectional view at point CC in both the non-operating and operating states. The handle operating device also includes a handle 90 and a pressing assembly.

[0031] Specifically, the handle 90 is in the shape of a round rod, one end of which includes a ball head 91. A ball socket corresponding to the ball head 91 is provided on the forklift operating platform so that when an external force is applied, the handle 90 swings under the constraint of the ball socket. The handle 90 passes through the central hole 20.

[0032] The pressure-holding assembly includes a slip ring 50, an upper pressure-holding plate 70, and a spring 60 disposed between the upper pressure-holding plate 70 and the slip ring 50. The slip ring 50 is plate-shaped and includes an inner hole, which is sleeved on the handle 90. One side of the slip ring 50 abuts against the support area 310. At the same time, the spring 60 and the upper pressure-holding plate 70 are both sleeved on the handle 90. A nut 80 is threaded onto the handle 90 and abuts against the upper pressure-holding plate 70 so that the spring 60 is in a compressed state. It can be understood that when the position of the nut 80 is fixed, the spring 60, in the compressed state, applies an elastic force to the slip ring 50 located below the spring 60.

[0033] Please refer to this as well. Figure 7 When the handle 90 swings in one direction under the action of an external force, the slip ring 50 sleeved on the handle 90 moves along with it. Since the support areas 310 on the lower side of the slip ring 50 are all shaped with the proximal end 312 lower and the distal end 311 higher, after the slip ring 50 is displaced along the direction of the support areas 310, it presents a shape where one side is higher than the other, limited by the lower support areas 310. In this shape, due to the limitation of the nut 80 and the upper pressure plate 70, the higher side of the slip ring 50 compresses the corresponding side of the spring 60, making the elastic force on that side greater than the other side. When the handle 90 is in the center position, the two sides of the spring 60 are in a balanced state. That is, by using this mounting base 10 and handle operating device, the handle 90 has the ability to maintain its centered position, and after operating the handle 90, the handle 90 has the ability to automatically return to the center. More specifically, in Figure 7In the middle, the handle 90 is configured to swing to the left. The slip ring 50 moves along the left side and presents a shape with the left side higher than the right side. This causes the left side of the slip ring 50 to compress the left side of the spring 60, and makes the elastic force on the left side of the spring 60 greater than the elastic force on the right side of the spring 60. As a result, the handle 90 returns to the right side under the unbalanced elastic force.

[0034] Furthermore, the nut 80 is adjustablely mounted on the handle 90 to quickly adjust the elastic force of the spring 60 on the slip ring 50. More specifically, the nut 80 is adjustable along the axial direction of the handle 90, thereby allowing the spring 60 to be further compressed or extended, thus adjusting the elastic force. That is, by rotating the nut 80, the preload of the spring 60 can be changed, thereby adjusting the return sensitivity.

[0035] Furthermore, when not subjected to external force, the axis of the handle 90 is collinear with the central axis 201.

[0036] Furthermore, when the axis of the handle 90 is collinear with the central axis 201, the slip ring 50 includes an abutment point that abuts against the support area 310. The abutment point is located in the region between the proximal end 312 and the distal end 311, so that the slip ring 50 can move better along the support area 310 under the action of external force.

[0037] Furthermore, the slip ring 50 is circular.

[0038] Furthermore, the support area 310 is linear, which makes it easier for the slip ring 50 to move along the extension direction of the support area 310, and makes the slip ring 50 have less friction when moving along the support area 310.

[0039] Furthermore, the support surface 31 is an arc surface. More specifically, if a virtual plane is defined perpendicular to the support area 310, the projection of the support surface 31 onto the virtual plane will be arc-shaped. In this case, the slip ring 50 can move more stably along the support area 310.

[0040] Furthermore, a virtual cone surface 33 is defined as formed by rotating one of the support areas 310 around the central axis 201. Then, the support areas 310 of each boss 30 are located on the virtual cone surface 33. It can be understood that the virtual cone surface 33 includes a vertex 331, which is located inside the central hole 20 and is used to limit the displacement trajectory of the slip ring 50.

[0041] Furthermore, the bosses 30 also include connecting platforms 40, which together form a support platform. The support platform is tubularly mounted on the base 100. The bosses 30 also include connecting surfaces 32 on both sides of the support surface 31. The connecting surfaces 32 connect the top surface of the connecting platform 40 and the support surface 31, and the connecting surfaces 32 are planar.

[0042] Furthermore, the connecting platform 40 includes a groove 41, which includes a bottom surface 410. The bottom surface 410 is inclined to the virtual base surface 202. The vertical height of the side of the bottom surface 410 adjacent to the central hole 20 is greater than the vertical height of the side away from the central hole 20. By setting the groove 41, interference between the handle 90 and the connecting platform 40 is avoided when the handle 90 swings.

[0043] Furthermore, the aforementioned boss 30 has at least four protrusions.

[0044] Furthermore, the number of the bosses 30 is even, so that after the bosses 30 are arranged in a circular pattern, they exhibit axial symmetry, thereby making the slip ring 50 slide more stably and allowing the handle 90 to swing in a symmetrical manner.

[0045] Furthermore, the mounting base 10 is made of a self-lubricating material to reduce the friction of the slip ring 50 when it moves in the support area 310. At the same time, the slip ring 50 can also be made of a self-lubricating material, such as polytetrafluoroethylene.

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mounting base, characterized in that, The base includes a central hole, the central hole including a central axis, and a plurality of protrusions arranged in a circumferential array around the central hole. Each protrusion includes a support surface facing the central axis, and the support surface includes a support area, which includes a proximal end adjacent to the central hole and a distal end away from the central hole. The distance between the support area and the central axis gradually increases from the proximal end to the distal end.

2. The mounting base as described in claim 1, characterized in that, Define a virtual base plane perpendicular to the central axis, and the support area is inclined to the virtual base plane, with an inclination angle of 10° to 45° between the support area and the virtual base plane.

3. The mounting base as described in claim 2, characterized in that, The supporting surface is an arc surface.

4. The mounting base as described in claim 3, characterized in that, The support area is linear.

5. The mounting base as described in claim 4, characterized in that, A virtual cone surface is defined as formed by rotating one of the support areas around the central axis. The support areas of each boss are located on the virtual cone surface, and the virtual cone surface includes a vertex located inside the central hole.

6. The mounting base as described in claim 4, characterized in that, The protrusions also include a connecting platform, which includes a groove. The groove includes a bottom surface, which is inclined to the virtual base surface. Furthermore, the vertical height of the bottom surface of the groove adjacent to the central hole is greater than the vertical height of the side of the groove away from the central hole.

7. A handle operating device, characterized in that, The device includes a handle, a holding assembly, and a mounting base as described in claim 1. The handle passes through a central hole. The holding assembly includes a slip ring, an upper holding plate, and a spring disposed between the upper holding plate and the slip ring. The slip ring is sleeved on the handle, with one side of the slip ring abutting against the support area. The spring and the upper holding plate are both sleeved on the handle. A nut is threaded onto the handle and abuts against the upper holding plate to compress the spring.

8. The handle operating device as described in claim 7, characterized in that, When the handle swings, the slip ring fitted on the handle moves along with it, creating a height difference between the two sides of the slip ring.

9. The handle operating device as described in claim 7, characterized in that, The nut is adjustable along the axis of the shank.

10. The handle operating device as claimed in claim 7, characterized in that, The number of protrusions is at least four, and is an even number.

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