Handle base and agricultural machine
By using the connecting structure between annular grooves and rolling parts in the agricultural machine handle rotary table, the problem of easy bearing failure is solved, farmers can replace and repair it themselves, and the working efficiency and direction stability of the agricultural machine are improved.
Patent Information
- Application Number
- CN202422380125.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The bearings of the existing agricultural machinery handle turntable are susceptible to wind, rain, sand and dust pollution, causing failure, and it is difficult to disassemble and replace, and requires professional personnel to operate, which is costly and affects the utilization rate of agricultural machinery.
The connecting structure between the annular groove and the rolling parts is adopted, and the handle is rotatably connected through the rolling parts to avoid difficulties in bearing disassembly. Farmers can replace it themselves, increasing installation accuracy and stability and reducing movement clearance.
The maintenance process of handles is simplified, maintenance costs are reduced, utilization rate and direction stability of agricultural machinery are improved, and labor intensity is reduced.
Smart Images
Figure CN223080481U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural equipment, in particular to the technical field of agricultural machine handles, and specifically refers to a handle base and an agricultural machine. Background Art
[0002] With the development of agricultural modernization, agricultural machines such as small rotary tillers and small weeding machines are widely used in the tillage operations of various greenhouses, small cultivated lands, and hilly orchards. Due to the requirements of the operating environment and crop planting, the handle of the agricultural machine needs to have the function of horizontal angle adjustment, so that farmers can adjust the angle of the handle according to their needs, enabling them to operate on the left or right side of the agricultural machine.
[0003] In the prior art, the horizontal adjustment function of the handle is usually realized through a handle turntable. However, there are still some problems to be solved in the existing handle turntables. For example, the sleeve and the rotating shaft of the handle turntable are usually rotationally connected by bearings. When the agricultural machine operates outdoors, affected by factors such as wind, rain, sand, and dust pollution, it is extremely easy for the bearings to fail, which may cause difficulties in turning the handle. In severe cases, the handle cannot be turned. The bearings are usually installed in an interference fit manner. When disassembling or installing, if not careful, it is easy to damage the components of the handle turntable or the bearings. Therefore, the disassembly and replacement of the bearings are relatively difficult, often requiring professional maintenance personnel to operate. The replacement efficiency is low and the replacement cost is high, which greatly reduces the utilization rate of the agricultural machine and increases the use cost of the agricultural machine. Summary of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides a handle base and an agricultural machine with high installation accuracy, small handle movement clearance, convenient adjustment and maintenance, which can improve the working efficiency of the agricultural machine and reduce the labor intensity of farmers.
[0005] The utility model is realized by the following technical solutions. A handle base is provided, which includes a first fixing component and a first mounting component. The first fixing component is provided with a second connecting portion, and the first mounting component is provided with a third connecting portion. The third connecting portion is sleeved on the second connecting portion. The second connecting portion and the third connecting portion are respectively provided with annular grooves, and the annular grooves are connected with first rolling components in a rolling manner. The first mounting component is rotationally connected with the first fixing component through the first rolling components. A first mounting hole is provided along the radial direction of the first mounting component, and the first mounting component is connected with a second mounting component.
[0006] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the annular groove, a rolling space can be provided for the first rolling component, and at the same time, the axial displacement of the first mounting component relative to the first fixing component can be restricted. Through the first rolling component, the difficulty brought by disassembling and replacing the bearing can be avoided. Without professional maintenance personnel, farmers can replace the faulty first rolling component by themselves, and the first rolling component, the first fixing component, and the first mounting component will not be damaged during the replacement and maintenance process, which greatly facilitates the maintenance of the handle turntable, reduces the use cost of agricultural machinery, and improves the utilization rate of agricultural machinery.
[0007] Preferably, the height of the annular groove of the third connecting portion is the same as that of the annular groove of the corresponding second connecting portion. The radius of the annular groove is the same as the radius of the first rolling component. The chord length of the annular groove is not greater than the radius of the first rolling component. The first rolling components are closely arranged in the annular groove. The maximum horizontal distance between the annular groove of the second connecting portion and the annular groove of the third connecting portion is the same as the diameter of the first rolling component.
[0008] The beneficial effects of adopting the above preferred technical solution are as follows: The first rolling components closely arranged in the annular groove can improve the stability when the first mounting component rotates. Since the maximum horizontal distance between the annular groove of the second connecting portion and the annular groove of the third connecting portion is the same as the diameter of the first rolling component, while ensuring the rotational connection between the first mounting component and the first fixing component, the annular grooves of the second connecting portion and the third connecting portion can be closely attached to the first rolling components, reducing the movement clearance when the first mounting component rotates, and further reducing the movement clearance of the handle, thereby further ensuring the direction stability when operating the agricultural machinery forward through the handle.
[0009] Preferably, first sealing components are respectively sleeved on both the upper and lower sides of the annular groove of the second connecting portion.
[0010] The beneficial effects of adopting the above preferred technical solution are as follows: By using the first sealing components, it can effectively prevent external rainwater and dust from entering the annular groove, thereby avoiding problems such as rust and abnormal wear of the first rolling components during rolling, improving the service life of the first rolling components, and further ensuring the normal operation of the handle turntable.
[0011] Preferably, the first mounting hole is communicated with the annular groove. The diameter of the first mounting hole is not less than the maximum length or diameter of the first rolling component. The first mounting hole is connected with a second sealing component.
[0012] The beneficial effects of adopting the above preferred technical solutions are as follows: Through the first mounting hole, the installation and replacement of the first rolling member can be greatly facilitated. At the same time, through the second sealing member, after the first rolling member is installed or replaced, the first mounting hole can be blocked to prevent foreign objects from entering the annular groove. At the same time, it can prevent the first mounting hole from forming a depression at the annular groove, thereby preventing the first rolling member in the annular groove from falling into the first mounting hole, or preventing the first rolling member from getting stuck at the first mounting hole when the first mounting member rotates, which affects the rotation of the first mounting member.
[0013] Preferably, the first mounting member and the second mounting member are respectively provided with a first positioning portion.
[0014] The beneficial effects of adopting the above preferred technical solutions are as follows: Through the first positioning portion, the firmness of the agricultural machine handle after installation can be increased.
[0015] Preferably, a first adjusting member is fixedly connected to the fixed cross bar of the agricultural machine handle. The first adjusting member is provided with a second positioning portion. The fifth connecting portion is horizontally arranged on the first mounting member. The fifth connecting portion is provided with an inner hole and a second adjusting member is slidably connected to the inner hole of the fifth connecting portion. The second adjusting member is provided with a third positioning portion that meshes with the second positioning portion.
[0016] Preferably, the fifth connecting portion is connected to a third mounting member. The third mounting member is connected to the second adjusting member through a first elastic member. The agricultural machine handle is connected to a first switch member. The first switch member is connected to the second adjusting member through a wire.
[0017] Preferably, the second adjusting member is provided with a fourth positioning portion. A second mounting hole is provided along the radial direction of the fifth connecting portion. The second mounting hole is connected to a positioning screw.
[0018] The beneficial effects of adopting the above preferred technical solutions are as follows: Through the first adjusting member and the second adjusting member, when the agricultural machine handle is subjected to a vertical pressure, the agricultural machine handle can be prevented from rotating up and down. Through the first switch member, the second adjusting member can be pulled to separate from the first adjusting member, thereby facilitating the adjustment of the height of the agricultural machine handle. Through the first elastic member, after the agricultural machine handle is adjusted, the second adjusting member can be automatically pushed to re-mesh with the first adjusting member. By using the positioning screw, the second adjusting member can be prevented from rotating relative to the fifth connecting portion.
[0019] Preferably, a sixth connecting portion is vertically arranged on the first mounting member. The sixth connecting portion is provided with an inner hole and a third adjusting member is slidably connected to the inner hole of the sixth connecting portion. The first fixing member is provided with a first connecting portion. The first connecting portion is provided with at least two positioning holes. The third adjusting member is inserted into the positioning holes.
[0020] Preferably, a fourth mounting member is connected to the sixth connecting portion. The fourth mounting member is connected to a third adjusting member through a second elastic member. A second switch member is connected to the agricultural machinery handle. The second switch member is connected to the third adjusting member through a wire.
[0021] The beneficial effects of adopting the above preferred technical solution are as follows: Through the third adjusting member, when the agricultural machinery handle is subjected to a horizontal thrust, the horizontal rotation of the agricultural machinery handle can be prevented. Through the second switch member, the third adjusting member can be pulled out of the positioning hole of the first fixing member, thereby facilitating the adjustment of the horizontal angle between the agricultural machinery handle and the advancing direction of the agricultural machinery. Through the second elastic member, after the adjustment of the agricultural machinery handle is completed, the third adjusting member can be automatically pushed to be re-inserted into the positioning hole of the first fixing member.
[0022] The present utility model further provides an agricultural machinery, including the handle base as described in any one of the above. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a schematic structural diagram of the present utility model;
[0024] Figure 2 is a schematic structural diagram of another angle of the present utility model;
[0025] Figure 3 is a schematic partial structural diagram of the present utility model;
[0026] Figure 4 is a partial cross-sectional view of the fifth connecting portion in the present utility model;
[0027] Figure 5 is a partial cross-sectional view of the sixth connecting portion in the present utility model;
[0028] Figure 6 is a partial cross-sectional view of the first mounting hole in the present utility model;
[0029] Figure 7 is a schematic structural diagram of the first fixing member and the first rolling member in the present utility model;
[0030] Figure 8 is a front view of the first fixing member in the present utility model;
[0031] Figure 9 is a cross-sectional view of the first mounting member in the present utility model.
[0032] As shown in the figure:
[0033] 1. First fixing component, 2. First mounting component, 3. Annular groove, 4. First rolling component, 5. First sealing component, 6. Second sealing component, 7. Second mounting component, 8. First adjusting component, 9. Second adjusting component, 10. Third mounting component, 11. Third adjusting component, 12. Fourth mounting component, 13. First elastic component, 14. Second elastic component, 15. Agricultural machinery handle;
[0034] 101. First connecting portion, 102. Second connecting portion, 103. Positioning hole;
[0035] 201. Third connecting portion, 202. First mounting hole, 203. Fourth connecting portion, 204. First positioning portion, 205. Fifth connecting portion, 206. Second mounting hole, 207. Sixth connecting portion; 801. Second positioning portion;
[0036] 901. Third positioning portion. Detailed implementation manner
[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0038] Embodiment 1:
[0039] As Figures 1-9 shown, a handle base includes a first fixing component 1 and a first mounting component 2, and both the first fixing component 1 and the first mounting component 2 are integrally cast.
[0040] The first fixing member 1 is provided with a first connecting portion 101, and the first mounting member 2 is provided with a third connecting portion 201. The first fixing member 1 is fixed to the frame of the agricultural machine through the first connecting portion 101. The top of the first connecting portion 101 is connected with a second connecting portion 102. The second connecting portion 102 is a cylindrical boss, and the third connecting portion 201 is a cylindrical inner hole. The diameter of the second connecting portion 102 is not greater than the diameter of the third connecting portion 201. The third connecting portion 201 is sleeved on the second connecting portion 102. At least one annular groove 3 is respectively provided on the outer side wall of the second connecting portion 102 and the inner side wall of the third connecting portion 201. In this embodiment, preferably, along the axial direction of the first connecting portion 101 and the second connecting portion 102, two annular grooves 3 are successively provided on the outer side wall of the first connecting portion 101 and the inner side wall of the second connecting portion 102. The height of the annular groove 3 of the third connecting portion 201 is the same as the height of the corresponding annular groove 3 of the second connecting portion 102. A plurality of first rolling members 4 are rotatably connected in the annular groove 3. The radius of the first rolling member 4 is the same as the radius of the annular groove 3. The chord length of the annular groove 3 is not greater than the radius of the first rolling member 4. The plurality of first rolling members 4 are closely arranged in the annular groove 3. The third connecting portion 201 is rotatably connected with the second connecting portion 102 through the first rolling members 4. The maximum horizontal distance from the annular groove 3 of the second connecting portion 102 to the annular groove 3 of the third connecting portion 201 is the same as the diameter of the first rolling member 4. The first rolling member 4 is a component with the same function such as a ball or a roller. In this embodiment, preferably, the first rolling member 4 is a ball. A first sealing member 5 is respectively sleeved on the upper side of the uppermost annular groove 3 and the lower side of the lowermost annular groove 3 of the second connecting portion 102. The first sealing member 5 is a component with the same function such as an oil seal, a dust pad, an O-ring or others. In this embodiment, preferably, the first sealing member 5 is an oil seal.
[0041] A first mounting hole 202 communicating with the annular groove 3 is provided radially along the first mounting member 2. The diameter of the first mounting hole 202 is not less than the maximum length or diameter of the first rolling member 4. The number of the first mounting holes 202 is the same as that of the annular grooves 3 on the third connecting portion 201. The height of the first mounting hole 202 is the same as that of the corresponding annular groove 3. The first rolling member 4 is installed into the annular groove 3 through the first mounting hole 202. The first mounting hole 202 is connected with a second sealing member 6. The length of the second sealing member 6 is the same as the depth of the first mounting hole 202. The second sealing member 6 is a plug with a sealing ring, a hole plug or other components with the same function. In this embodiment, preferably, the second sealing member 6 is a plug with a sealing ring. Through the second sealing member 6, the first mounting hole 202 can be blocked to prevent foreign matters from entering the annular groove through the first mounting hole 202, and it can also prevent the first mounting hole 202 from forming a depression on the annular groove 3 of the third connecting portion 201, thereby preventing the first rolling member 4 in the annular groove 3 from falling into the first mounting hole 202, or preventing the first rolling member 4 from getting stuck at the first mounting hole 202 when the first mounting member 2 rotates, which affects the rotation of the first mounting member 2.
[0042] Fourth connecting portions 203 are symmetrically arranged on the left and right sides of the top of the first mounting member 2. The first mounting member 2 is connected with a second mounting member 7 through the fourth connecting portions 203. Concentric first positioning portions 204 are respectively provided on the fourth connecting portions 203 and the second mounting member 7. The first positioning portion 204 is a structure with the same function such as an arc-shaped groove, a V-shaped groove, a trapezoidal groove, etc. In this embodiment, preferably, the first positioning portion 204 is an arc-shaped groove. A fixed cross bar is provided on the agricultural machine handle 15. The agricultural machine handle 15 is installed at the first positioning portions 204 of the fourth connecting portions 203 and the second mounting member 7 through the fixed cross bar. The diameter of the first positioning portion 204 is the same as that of the fixed cross bar of the agricultural machine handle 15. The chord length of the first positioning portion 204 is less than the diameter. The axis of the first positioning portion 204 is horizontally arranged and intersects with the axis of the second connecting portion 102.
[0043] On the left or right side of the fixed crossbar of the agricultural machinery handle 15, a first adjustment component 8 that rotates up and down with the agricultural machinery handle 15 is fixedly connected. The first adjustment component 8 is arranged radially along the fixed crossbar. The first adjustment component 8 is fan-shaped. One end of the first adjustment component 8 away from the fixed crossbar of the agricultural machinery handle 15 is provided with a second positioning portion 801. The second positioning portion 801 includes at least two positioning holes 103, positioning teeth or other structures with the same function arranged along the fan-shaped arc of the first adjustment component 8. In this embodiment, preferably, the second positioning portion 801 is positioning teeth covering the fan-shaped arc of the first adjustment component 8. A fifth connecting portion 205 is horizontally arranged on one side of the first mounting component 2. The fifth connecting portion 205 is a hollow structure. A second adjustment component 9 is slidably connected to the inner hole of the fifth connecting portion 205. One end of the second adjustment component 9 close to the first adjustment component 8 is provided with a third positioning portion 901 that meshes with the second positioning portion 801. One end of the fifth connecting portion 205 away from the first adjustment component 8 is connected to a third mounting component 10. The third mounting component 10 is a hollow structure. The third mounting component 10 is connected to the second adjustment component 9 through a first elastic component 13. The compression stroke of the first elastic component 13 is greater than the meshing length between the second adjustment component 9 and the first adjustment component 8. The agricultural machinery handle 15 is connected with a first switch component. The first switch component is connected to the second adjustment component 9 through a wire. In this embodiment, preferably, the first switch component is a wire control switch. A fourth positioning portion is arranged on the side surface of the second adjustment component 9. The fourth positioning portion is a positioning groove, a spline or other structures with the same function. In this embodiment, preferably, the fourth positioning portion is a positioning groove. A second mounting hole 206 communicating with the fourth positioning portion is arranged radially along the fifth connecting portion 205. A positioning screw is connected in the second mounting hole 206. The second adjustment component 9 can be prevented from rotating relative to the fifth connecting portion 205 through the positioning screw.
[0044] When the first switch component is in the released state, the second adjustment component 9 extends out of the fifth connecting portion 205 under the influence of the elastic force of the first elastic component 13. The third positioning portion 901 of the second adjustment component 9 meshes with the second positioning portion 801 of the first adjustment component 8. Since the second adjustment component 9 cannot rotate relative to the fifth connecting portion 205, the agricultural machinery handle 15 cannot rotate up and down. At this time, the height of one end of the agricultural machinery handle 15 away from the first mounting component 2 is fixed, and the agricultural machinery handle 15 can be prevented from rotating in the first positioning portion 204 when subjected to upward or downward pressure.
[0045] When the first switch member is in the tightened state, the first switch member drives the second adjusting member 9 through a cable to compress the first elastic member 13, so that the second adjusting member 9 slides along the fifth connecting portion 205 in a direction away from the first adjusting member 8, and the second adjusting member 9 is separated from the first adjusting member 8. At this time, the second mounting member 7 is released, and the agricultural machine handle 15 can freely rotate up and down, and thus the height of the end of the agricultural machine handle 15 away from the first mounting member 2 can be adjusted.
[0046] On the other side of the first mounting member 2, a sixth connecting portion 207 is vertically provided. The sixth connecting portion 207 is a hollow structure. A third adjusting member 11 is slidably connected in the inner hole of the sixth connecting portion 207. At least two positioning holes 103 are uniformly distributed along the circumference of the first connecting portion 101. In this embodiment, preferably, 12 positioning holes 103 are uniformly distributed along the circumference of the first connecting portion 101. The distance from the axis of any one positioning hole 103 to the axis of the third connecting portion 201 is the same as the distance from the axis of the third adjusting member 11 to the axis of the third connecting portion 201. The third adjusting member 11 is inserted into the positioning hole 103, and the diameter of the third adjusting member 11 is the same as the diameter of the positioning hole 103. One end of the sixth connecting portion 207 away from the first connecting portion 101 is connected to a fourth mounting member 12. The fourth mounting member 12 is a hollow structure. The fourth mounting member 12 is connected to the third adjusting member 11 through a second elastic member 14. The compression stroke of the second elastic member 14 is greater than the insertion length of the third adjusting member 11 into the positioning hole 103. The agricultural machine handle 15 is connected with a second switch member. The second switch member is connected to the third adjusting member 11 through a cable. In this embodiment, preferably, the second switch member is a wire control switch.
[0047] When the second switch member is in the released state, the third adjusting member 11 is affected by the elastic force of the second elastic member 14 and extends out of the sixth connecting portion 207 and is inserted downward into the positioning hole 103. At this time, the agricultural machine handle 15 cannot be horizontally rotated, and the horizontal angle between the end of the agricultural machine handle 15 away from the first mounting member 2 and the forward direction of the agricultural machine is fixed;
[0048] When the second switch member is in the tightened state, the second switch member drives the third adjusting member 11 through a cable to compress the second elastic member 14, so that the third adjusting member 11 slides along the sixth connecting portion 207 in a direction away from the first connecting portion 101, and the third adjusting member 11 is separated from the positioning hole 103. At this time, the agricultural machine handle 15 can be freely horizontally rotated, and thus the horizontal angle between the end of the agricultural machine handle 15 away from the first mounting member 2 and the forward direction of the agricultural machine can be adjusted.
[0049] This embodiment also provides an agricultural machine, including the handle base as described in any one of the above.
[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the same; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A handle base, characterized in that: It includes a first fixing member (1) and a first mounting member (2). The first fixing member (1) is provided with a second connecting portion (102), and the first mounting member (2) is provided with a third connecting portion (201). The third connecting portion (201) is sleeved on the second connecting portion (102). Both the second connecting portion (102) and the third connecting portion (201) are respectively provided with an annular groove (3). A first rolling member (4) is connected to the annular groove (3) in a rolling manner. The first mounting member (2) is rotationally connected to the first fixing member (1) through the first rolling member (4). A first mounting hole (202) is provided along the radial direction of the first mounting member (2), and the first mounting member (2) is connected to a second mounting member (7).
2. The handle base according to claim 1, wherein: The height of the annular groove (3) of the third connecting portion (201) is the same as that of the corresponding annular groove (3) of the second connecting portion (102). The radius of the annular groove (3) is the same as the radius of the first rolling member (4). The chord length of the annular groove (3) is not greater than the radius of the first rolling member (4). The first rolling members (4) are closely arranged in the annular groove (3). The maximum horizontal distance between the annular groove (3) of the second connecting portion (102) and the annular groove (3) of the third connecting portion (201) is the same as the diameter of the first rolling member (4).
3. The handle base according to claim 1, wherein: First sealing members (5) are respectively sleeved on the upper and lower sides of the annular groove (3) of the second connecting portion (102).
4. A handle base according to claim 1, characterized in that: The first mounting hole (202) is communicated with the annular groove (3). The diameter of the first mounting hole (202) is not less than the maximum length or diameter of the first rolling member (4). The first mounting hole (202) is connected to a second sealing member (6).
5. The handle base according to claim 1, wherein: Both the first mounting member (2) and the second mounting member (7) are respectively provided with a first positioning portion (204).
6. The handle base according to claim 1, characterized in that: A first adjusting member (8) is fixedly connected to the fixing cross bar of the agricultural machinery handle (15). The first adjusting member (8) is provided with a second positioning portion (801). The first mounting member (2) is horizontally provided with a fifth connecting portion (205). The fifth connecting portion (205) is provided with an inner hole, and a second adjusting member (9) is slidably connected to the inner hole of the fifth connecting portion (205). The second adjusting member (9) is provided with a third positioning portion (901) that meshes with the second positioning portion (801).
7. The handle base according to claim 6, wherein: The fifth connecting portion (205) is connected to a third mounting member (10). The third mounting member (10) is connected to the second adjusting member (9) through a first elastic member (13). The agricultural machinery handle (15) is connected to a first switch member, and the first switch member is connected to the second adjusting member (9) through a wire.
8. The handle base according to claim 6, characterized in that: The second adjusting member (9) is provided with a fourth positioning portion. A second mounting hole (206) is provided along the radial direction of the fifth connecting portion (205), and a positioning screw is connected to the second mounting hole (206).
9. The handle base according to claim 1, wherein: The first mounting member (2) is vertically provided with a sixth connecting portion (207). The sixth connecting portion (207) is provided with an inner hole, and a third adjusting member (11) is slidably connected to the inner hole of the sixth connecting portion (207). The first fixing member (1) is provided with a first connecting portion (101), and the first connecting portion (101) is provided with at least two positioning holes (103). The third adjusting member (11) is inserted into the positioning holes (103). Preferably, the sixth connecting portion (207) is connected to a fourth mounting member (12). The fourth mounting member (12) is connected to the third adjusting member (11) through a second elastic member (14). An agricultural machine handle (15) is connected to a second switch member, and the second switch member is connected to the third adjusting member (11) through a wire.
10. An agricultural machine, characterized in that: Including the handle base according to any one of claims 1-9 above.