Operating device capable of axially positioning hollow gear shifting shaft

Abstract

The utility model relates to the technical field of transmission gear shifting, and discloses a control device capable of axially positioning a hollow gear shifting shaft, a gear shifting interlocking assembly, the hollow gear shifting shaft and a transverse gear shifting rod are arranged in a shell of the control device; the hollow gear shifting shaft is arranged on the transverse gear shifting rod in a sleeving mode, the input end of the transverse gear shifting rod is connected with the input end of the booster, the gear shifting interlocking assembly is arranged on the hollow gear shifting shaft in a sleeving mode and connected with the transverse gear shifting rod through the hollow gear shifting shaft, and the threaded hole is formed in the top of the control device shell and internally connected with the stop screw in a threaded mode. The bottom of the stop screw is inserted into the hollow gear shifting shaft through the threaded hole in the top of the control device shell, so that the stop screw axially positions the hollow gear shifting shaft in the axial direction, the hollow gear shifting shaft is prevented from moving in the axial direction, and it is guaranteed that output force of the booster can be effectively transmitted to the gear shifting block.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission shifting, in particular to a manipulation device capable of axially positioning a hollow shifting shaft. Background Art

[0002] As commercial vehicle customers have higher and higher requirements for the convenience and comfort of traditional manual mechanical transmission shifting, commercial vehicles have begun to be equipped with shift boosters in recent years, which greatly reduces the shifting force of commercial vehicles, making the shifting easier and more comfortable for drivers, reducing labor intensity, improving driving experience, and improving work efficiency. The single- and double-lever universal controls with power assist that are easier to shift and more versatile are widely used in various road vehicles.

[0003] Currently, most gearboxes equipped with power shifters need to use a hollow shift shaft to transmit the shift force output by the power shifter. In the process of stably and reliably transmitting the shift force, the hollow shift shaft is required to only perform circumferential rotational motion. However, during the transmission process, the hollow shift shaft is prone to axial movement, resulting in the inability to successfully transmit the output force of the booster to the shift head.

[0004] Patent CN203836173U-A double-rod operating mechanism with a shift booster transmission, a hollow shift shaft is installed in the operating mechanism housing, a gear selection transverse rod and a gear shift transverse rod are arranged in the hollow shift shaft, the gear shift transverse rod is fixedly connected to the booster input shaft shifter and the outer shift arm, and the booster output shaft shifter is also fixedly connected to the hollow shift shaft. However, the hollow shift shaft in the patent does not have a specific axial positioning structure, resulting in axial movement of the hollow shift shaft when the gear selection is realized by the gear selection shifter toggling the shifter, resulting in the inability to successfully transmit the booster output force to the shifter. Utility Model Content

[0005] In order to overcome the defects of the above-mentioned prior art, the purpose of the utility model is to provide an operating device that can axially position a hollow shift shaft, so as to solve the technical problem in the prior art that the axial movement of the hollow shift shaft causes the booster output force to be unable to be successfully transmitted to the shift head.

[0006] The utility model is realized by the following technical solutions:

[0007] A control device capable of axially positioning a hollow shift shaft comprises a control window cover and a control device housing; the control device housing comprises a shift interlock assembly, a hollow shift shaft and a transverse shift rod; the hollow shift shaft is sleeved on the transverse shift rod, the input end of the transverse shift rod is connected to the input end of a booster, the shift interlock assembly is sleeved on the hollow shift shaft and is connected to the transverse shift rod via the hollow shift shaft, a threaded hole is provided on the top of the control device housing, a stop screw is threadedly connected to the threaded hole, the control window cover is covered on the top of the control device housing, and one side of the control window cover is pressed on the top of the stop screw; the bottom of the stop screw is inserted on the hollow shift shaft through the threaded hole at the top of the control device housing for axial positioning of the hollow shift shaft.

[0008] Preferably, a positioning slot is provided on the hollow shift shaft at a position corresponding to the stop screw, and a gap exists between the bottom of the stop screw in the positioning slot and the transverse shift rod.

[0009] Furthermore, the bottom end of the stop screw is provided with an annular chamfer structure, and there is a gap between the positioning slot of the hollow shift shaft and the annular chamfer of the bottom end of the stop screw.

[0010] Preferably, a limiting boss is provided on the top of the stop screw, and the limiting boss abuts against the top of the operating device housing after being threadedly connected in the threaded hole by the stop screw.

[0011] Furthermore, the length of the stop screw is smaller than the thickness of the top of the operating device housing and the outer wall of the hollow shift shaft after being superimposed.

[0012] Preferably, the top of the stop screw adopts a hexagon socket female end structure, which is used for assembling and disassembling the stop screw in the threaded hole of the operating device housing.

[0013] Preferably, the operating window cover is provided with a boss plane at the position of the stop screw, and there is a gap between the boss plane and the top of the stop screw.

[0014] Preferably, the shift interlock assembly includes a shift head and an interlock block, wherein the shift head and the interlock block are both mounted on a hollow shift shaft, wherein the shift head is located between the two ends of the interlock block, and through holes are provided at the positions of the hollow shift shaft and the transverse shift rod corresponding to the position of the shift head, and the shift head is positioned by a locating pin that penetrates the through holes of the hollow shift shaft and the transverse shift rod.

[0015] Furthermore, the through hole of the transverse shift rod is arranged to limit the radial position of the positioning pin, and the through hole of the hollow shift shaft has a greater axial width than the through hole of the transverse shift rod.

[0016] Preferably, an operating window cover gasket is provided between the operating window cover and the top of the operating device housing.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model provides an operating device capable of axially positioning a hollow shift shaft, wherein a housing of the operating device comprises a shift interlocking assembly, a hollow shift shaft and a transverse shift rod; the hollow shift shaft is sleeved on the transverse shift rod, the input end of the transverse shift rod is connected to the input end of a booster, the shift interlocking assembly is sleeved on the hollow shift shaft and is connected to the transverse shift rod through the hollow shift shaft, a threaded hole is provided on the top of the housing of the operating device, and a stop screw is threadedly connected in the threaded hole, the bottom of the stop screw is inserted into the hollow shift shaft through the threaded hole at the top of the housing of the operating device, so that the stop screw can axially position the hollow shift shaft, thereby preventing the hollow shift shaft from moving along the axial direction and ensuring that the output force of the booster can be effectively transmitted to the shift dial head.

[0019] Furthermore, a positioning slot is provided on the hollow shift shaft corresponding to the position of the stop screw, and there is a gap between the bottom of the stop screw in the positioning slot and the transverse shift rod. The hollow shift shaft is effectively limited in the axial direction by providing a positioning slot on the shaft body, and the stop screw extends into the positioning slot. There is a gap between the bottom of the stop screw in the positioning slot and the transverse shift rod, thereby preventing the stop screw from affecting the axial gear selection movement and gear shift rotation of the transverse shift rod when axially positioning the hollow shift shaft.

[0020] Furthermore, an annular chamfer structure is provided at the bottom end of the stop screw, and a gap exists between the positioning slot of the hollow shift shaft and the annular chamfer at the bottom end of the stop screw, thereby preventing the hollow shift shaft from lacking axial positioning and being unable to maintain the ideal centering position of the long slot hole during assembly. This ensures that the axial direction of the hollow shift shaft is automatically adjusted within a certain range, thereby achieving more efficient assembly and ensuring the axial positioning of the hollow shift shaft by the stop screw.

[0021] Furthermore, a limiting boss is provided on the top of the stop screw, and the limiting boss is threadedly connected to the threaded hole through the stop screw and abuts against the top of the operating device housing. This can ensure that after installation, a certain gap is maintained between the lower end plane of the stop screw and the transverse shift lever, and a certain gap is maintained between the operating window cover and the stop screw.

[0022] Furthermore, the length of the stop screw is smaller than the thickness of the top of the operating device housing and the outer wall of the hollow shift shaft, thereby preventing the stop screw from affecting the transverse shift lever after being inserted into the top of the operating device housing and the hollow shift shaft.

[0023] Furthermore, the operating window cover is provided with a boss plane at the position of the stop screw, and there is a gap between the boss plane and the top of the stop screw, allowing the stop screw to loosen and withdraw a certain distance but always ensuring that the cylindrical surface at the bottom end of the stop screw is always matched with the top clearance of the positioning slot hole of the hollow shift shaft; when the operating mechanism is working, the stop screw is subjected to the shear force of the axial movement of the hollow shift shaft and the friction force of the rotation around the axis, and is prone to loosening. When the stop screw is loosened to fit with the boss plane of the operating window cover and limited, the effective length of the clearance matching between the lower cylindrical surface of the stop screw and the long slot hole of the hollow shift shaft is ensured, thereby continuously axially positioning the hollow shift shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the operating device capable of axially positioning the hollow shift shaft in the utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the middle CC section;

[0026] In the figure: 1-operating window cover; 2-operating device housing; 3-operating window cover gasket; 4-stop screw; 5-locating pin; 6-shift dial head; 7-interlocking block; 8-hollow shift shaft; 9-lateral shift lever; 10-through hole. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, products or devices.

[0029] The utility model is further described in detail below with reference to the accompanying drawings:

[0030] The utility model aims to provide an operating device for axially positioning a hollow shift shaft, so as to solve the technical problem in the prior art that the output force of the booster cannot be successfully transmitted to the shift head due to the axial movement of the hollow shift shaft.

[0031] See also Figure 1 and Figure 2 In one embodiment of the utility model, an operating device for axially positioning a hollow shift shaft is provided, comprising an operating window cover 1 and an operating device housing 2; the operating device housing 2 comprises a shift interlocking assembly, a hollow shift shaft 8 and a transverse shift rod 9; the hollow shift shaft 8 is sleeved on the transverse shift rod 9, the input end of the transverse shift rod 9 is connected to the input end of the booster, the shift interlocking assembly is sleeved on the hollow shift shaft 8, and is connected to the transverse shift rod 9 through the hollow shift shaft 8, a threaded hole is provided on the top of the operating device housing 2, a stop screw 4 is threadedly connected in the threaded hole, the operating window cover 1 is covered on the top of the operating device housing 2, and one side of the operating window cover 1 is pressed on the top of the stop screw 4; the bottom of the stop screw 4 is inserted on the hollow shift shaft 8 through the threaded hole on the top of the operating device housing 2, for axial positioning of the hollow shift shaft 8.

[0032] Preferably, the hollow shift shaft 8 is provided with a positioning slot hole at a position corresponding to the stop screw 4 , and there is a gap between the bottom of the stop screw 4 in the positioning slot hole and the transverse shift rod 9 .

[0033] The hollow shift shaft of the utility model is provided with a positioning slot hole on the shaft body, and a stop screw extends into the positioning slot hole, thereby effectively limiting the hollow shift shaft in the axial direction. There is a gap between the bottom of the stop screw in the positioning slot hole and the transverse shift rod, thereby preventing the stop screw from affecting the axial gear selection movement and gear shift rotation of the transverse shift rod when axially positioning the hollow shift shaft.

[0034] Among them, the bottom end of the stop screw 4 is provided with an annular chamfer structure, and there is a gap between the positioning slot of the hollow shift shaft 8 and the annular chamfer of the bottom end of the stop screw 4, so as to avoid the hollow shift shaft from lacking axial positioning and being difficult to maintain the ideal centering position of the long slot hole during assembly, thereby ensuring that the axial direction of the hollow shift shaft is automatically adjusted within a certain range, realizing more efficient assembly, and ensuring the axial positioning of the hollow shift shaft by the stop screw.

[0035] Specifically, a limiting boss is provided on the top of the stop screw 4, and the limiting boss is threadedly connected in the threaded hole through the stop screw 4 and abuts against the top of the operating device housing 2, which can ensure that after installation, a certain gap is maintained between the lower end plane of the stop screw and the transverse shift lever, and a certain gap is maintained between the operating window cover and the stop screw.

[0036] The length of the stop screw 4 is smaller than the thickness of the top of the operating device housing 2 and the outer wall of the hollow shift shaft 8 after being superimposed.

[0037] Specifically, the top of the stop screw 4 adopts a hexagon socket female end structure, which is used to assemble and disassemble the stop screw 4 in the threaded hole of the operating device housing 2.

[0038] Specifically, the operating window cover 1 is provided with a boss plane at the position of the stop screw 4, and there is a gap between the boss plane and the top of the stop screw 4, allowing the stop screw to loosen and withdraw for a distance but always ensuring that the cylindrical surface at the bottom end of the stop screw is always matched with the top clearance of the positioning slot hole of the hollow shift shaft; when the operating mechanism is working, the stop screw is subjected to the shear force of the axial movement of the hollow shift shaft and the friction force of the rotation around the axis, and is prone to loosening. When the stop screw is loosened to fit with the boss plane of the operating window cover and limited, the effective length of the clearance match between the lower cylindrical surface of the stop screw and the long slot hole of the hollow shift shaft is guaranteed to continuously axially position the hollow shift shaft.

[0039] Specifically, the shift interlock assembly includes a shift head 6 and an interlock block 7, wherein the shift head 6 and the interlock block 7 are both sleeved on a hollow shift shaft 8, wherein the shift head 6 is located between the two ends of the interlock block 7, and the hollow shift shaft 8 and the transverse shift rod 9 are both provided with a through hole 10 at the position corresponding to the shift head 6, and the shift head 6 is positioned by a locating pin 5 penetrating the through hole 10 of the hollow shift shaft 8 and the transverse shift rod 9, wherein the through hole 10 of the transverse shift rod 9 is radially limited to the locating pin 5, and the through hole 10 of the hollow shift shaft 8 has a greater axial width than the through hole 10 of the transverse shift rod 9.

[0040] Specifically, an operating window cover gasket 3 is provided between the operating window cover 1 and the top of the operating device housing 2 .

[0041] In the utility model, after the operating window cover 1, the operating window cover gasket 3, and the operating device housing 4 are pressed against each other by connecting bolts, a certain gap is maintained between the operating window cover 1 and the stop screw 2. The shift head positioning pin 5 and the shift head 6, the hollow shift shaft 8, and the transverse shift rod 9 are clearance-matched. The hollow shift shaft 8 and the transverse shift rod 9 are clearance-matched. The interlocking block 7 and the hollow shift shaft 8 are clearance-matched.

[0042] The utility model provides an operating device capable of axially positioning a hollow shift shaft, which prevents excessive resistance to gear selection when selecting gears, and provides an excellent gear selection feel: when selecting gears, regardless of single or double lever operation, the gap between the transverse shift lever 9, the shift head positioning pin 5 and the shift head 6 is manually eliminated, and the three move axially together. At this time, the gap between the lower end plane of the stop screw 2 and the transverse shift lever 9 can ensure that the gear selection resistance is not too large, thereby preventing the gear from not returning to the selected position.

[0043] When selecting a gear, the hollow shift shaft 8 is prevented from axial movement due to the axial force: the axial movement of the shift knob 6 will drive the interlocking block 7 to move axially together. Due to the effect of gravity, the interlocking block 7 has a positive pressure with the hollow shift shaft 8, which will generate friction to drive the hollow shift shaft 8 to move axially. The lower cylindrical surface of the stop screw 2 and the positioning slot of the hollow shift shaft 8 are matched with each other, which effectively limits the axial movement of the hollow shift shaft 8, thereby ensuring that the operating mechanism reliably and stably transmits the booster output force when shifting.

[0044] When shifting gears, the stop screw 2 is matched with the positioning slot of the hollow shift shaft 8, and the hollow shift shaft 8 can rotate around the axis smoothly, transmitting the booster output force to the shift head 6 through the hollow shift shaft 8 and the shift head positioning pin 5.

[0045] In the utility model, the machined surface of the operating device housing 2 used for mounting and positioning the stop screw 4 and the machined surface of the operating housing used for matching with the operating window cover liner 3 are combined into one.

[0046] The raised structure of the operating window cover 1 used as the hollow shaft positioning pin is milled flat to form a boss plane, which is used as a clamping structure to prevent the set screw from being excessively loosened after assembly.

[0047] In summary, the utility model provides an operating device capable of axially positioning a hollow shift shaft, wherein a stop screw 4 is inserted into the hollow shift shaft 8 through a threaded hole at the top of the operating device housing 2, and is used for axially positioning the hollow shift shaft 8. The female end structure of the hexagonal socket of the stop screw 4 has strong assembly versatility, the limiting boss at the top has a good assembly and positioning effect, and the annular chamfered structure at the bottom can automatically adjust the hollow shift shaft 8 during assembly. The stop screw 4 is assembled on the operating device housing 2, and the operating window cover assembly can be flexibly removed for inspection and easy to disassemble and assemble. When selecting a gear, it can prevent excessive resistance to gear selection, ensure that the gear selection and return of the operating mechanism are clear, and have a superior hand feel. When selecting a gear, it can prevent the hollow shift shaft 8 from axial movement due to axial force, and ensure that the operating mechanism reliably and stably transmits the output force of the booster during gear shifting. The clamping structure of the operating window cover 1 effectively reduces the risk of axial positioning failure of the hollow shaft caused by loosening of the stop screw 4. The machining and detection methods of the operating window cover are simplified, resulting in a higher yield rate and better processability. The operating shell can process two matching surfaces with one cut, which has good processability.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A control device for axially positioning a hollow shift shaft, characterized in that: The invention comprises an operating window cover (1) and an operating device housing (2); the operating device housing (2) comprises a shift interlocking assembly, a hollow shift shaft (8) and a transverse shift rod (9); the hollow shift shaft (8) is sleeved on the transverse shift rod (9), the input end of the transverse shift rod (9) is connected to the input end of the booster, the shift interlocking assembly is sleeved on the hollow shift shaft (8) and is connected to the transverse shift rod (9) through the hollow shift shaft (8); a threaded hole is provided at the top of the operating device housing (2), a stop screw (4) is threadedly connected in the threaded hole, the operating window cover (1) is covered on the top of the operating device housing (2), and one side of the operating window cover (1) is pressed on the top of the stop screw (4); the bottom of the stop screw (4) is inserted into the hollow shift shaft (8) through the threaded hole at the top of the operating device housing (2) for axial positioning of the hollow shift shaft (8).

2. The operating device for axially positioning a hollow shift shaft according to claim 1, characterized in that: The hollow shift shaft (8) is provided with a positioning slot hole at a position corresponding to the stop screw (4), and a gap exists between the bottom of the stop screw (4) in the positioning slot hole and the transverse shift rod (9).

3. The operating device for axially positioning a hollow shift shaft according to claim 2, characterized in that: The bottom end of the stop screw (4) is provided with an annular chamfer structure, and a gap exists between the positioning slot of the hollow shift shaft (8) and the annular chamfer of the bottom end of the stop screw (4).

4. The operating device for axially positioning a hollow shift shaft according to claim 1, characterized in that: A limiting boss is provided on the top of the stop screw (4), and the limiting boss abuts against the top of the operating device housing (2) after being threadedly connected in the threaded hole through the stop screw (4).

5. The operating device for axially positioning a hollow shift shaft according to claim 4, characterized in that: The length of the stop screw (4) is smaller than the thickness of the top of the operating device housing (2) and the outer wall of the hollow shift shaft (8) after being superimposed.

6. The operating device for axially positioning a hollow shift shaft according to claim 1, characterized in that: The top of the stop screw (4) adopts a hexagonal female end structure, which is used for assembling and disassembling the stop screw (4) in the threaded hole of the operating device housing (2).

7. The operating device for axially positioning a hollow shift shaft according to claim 1, characterized in that: The operating window cover (1) is provided with a boss plane at the position of the stop screw (4), and a gap exists between the boss plane and the top of the stop screw (4).

8. The operating device for axially positioning a hollow shift shaft according to claim 1, characterized in that: The shift interlocking assembly comprises a shift head (6) and an interlocking block (7), wherein the shift head (6) and the interlocking block (7) are both sleeved on a hollow shift shaft (8), wherein the shift head (6) is located between two ends of the interlocking block (7), and through holes (10) are provided at positions of the hollow shift shaft (8) and the transverse shift rod (9) corresponding to the shift head (6), and the shift head (6) is positioned by a positioning pin (5) penetrating the through holes (10) of the hollow shift shaft (8) and the transverse shift rod (9).

9. The operating device for axially positioning a hollow shift shaft according to claim 8, characterized in that: The through hole (10) of the transverse shift rod (9) is provided to radially limit the positioning pin (5), and the through hole (10) of the hollow shift shaft (8) has a greater axial width than the through hole (10) of the transverse shift rod (9).

10. The operating device for axially positioning a hollow shift shaft according to claim 1, characterized in that: An operating window cover gasket (3) is provided between the operating window cover (1) and the top of the operating device housing (2).

Images