Locking structure and worm gear reducer

Abstract

The utility model discloses locking structure and worm and gear reducer, locking structure includes locking disc, elastic unit and sliding unit, locking disc surface sets up the slide of annular, is set up one or more recesses on the slide, and the recess depth is greater than the slide depth, and the locking disc one side close to the slide sets up elastic unit one end, and the other end of elastic unit sets up sliding unit, and sliding unit is matched in the slide and touches. The utility model has the beneficial effects that: through the locking disc setting slide and recess, make sliding unit slide in the slide, and sliding unit itself rubs the slide, produces the deceleration effect, until sliding unit slides to the recess, because of the rebound effect of elastic unit, and inserts in the recess, forms the passive locking of locking disc.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a locking structure and a worm gear reducer. Background Technology

[0002] Worm gear drives are widely used due to their advantages such as large transmission ratio, smooth operation, low noise, compact structure, and self-locking capability. They are mainly used to transmit motion and power between intersecting shafts, with a typical intersecting angle of 90°.

[0003] The transmission principle is meshing transmission, where power is transmitted through the meshing of the teeth of the worm gear and the worm shaft. On the one hand, to prevent the worm gear from becoming sluggish or jamming due to overheating during operation, a normal backlash is necessary; on the other hand, an appropriate normal backlash can improve the transmission efficiency of the worm gear.

[0004] Currently, worm gear transmission locking is a purely mechanical, manual locking and unlocking method. Chinese patent document CN117450142A discloses an electric locking device, including a worm gear fixing seat, a clamping fixing seat, a worm gear assembly, a reduction motor, and a locked body. The reduction motor drives the worm gear to lock or unlock the locked body via a worm wheel nut, achieving intelligent and automated unlocking and locking processes, replacing manual unlocking and locking methods. However, this locking method is only for locking and cannot be used as a speed reducer, requiring significant electrical control resources and posing a risk of misoperation.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The technical problem to be solved by this utility model is to solve the problem that locking cannot be used for deceleration and occupies additional resources.

[0007] This utility model solves the above-mentioned technical problems through the following technical means:

[0008] This utility model claims to protect a locking structure, including a locking disc, an elastic unit, and a sliding unit; the surface of the locking disc is provided with an annular slide, and one or more recesses are formed on the slide, the depth of the recess being greater than the depth of the slide;

[0009] One end of the locking disc near the slide is provided with an elastic unit, and the other end of the elastic unit is provided with a sliding unit, which is engaged with the slide within the slide.

[0010] The locking disc is designed with a track and a recess, allowing the sliding unit to slide within the track. The sliding unit itself rubs against the track, creating a deceleration effect. When the sliding unit reaches the recess, it is inserted into the recess due to the rebound of the elastic unit, thus passively locking the locking disc.

[0011] Preferably, the locking structure further includes a mounting part, which is coaxially arranged with the locking disc on one side of the slide.

[0012] The mounting section is used to secure the locking disc to the device to be locked.

[0013] Preferably, the mounting part has a stepped cylindrical structure, and a first screw hole is provided at the shoulder of the mounting part.

[0014] During installation, the device to be locked can be inserted into the cavity of the mounting section, and the first screw hole can be connected to the mounting hole of the device to be locked using the first bolt.

[0015] Preferably, the elastic element is a spring.

[0016] The elastic unit can also be a spring sheet, which mainly provides elastic power to the sliding unit, ensuring that the sliding unit is in a contracted state when sliding in the slide rail, so as not to affect the sliding of the sliding unit; and when in the recess, it is inserted into the recess for locking.

[0017] Preferably, the sliding unit is a ball-head pin.

[0018] A ball joint is also known as a ball hinge or ball joint. In actual use, it is not limited to a ball joint; it can also be a support rod with ball bearings or swivel casters.

[0019] A worm gear reducer with a locking structure includes a housing, a driving assembly, a driven assembly, a sliding sleeve, and a locking structure.

[0020] The housing contains a driving component and a driven component that mesh with each other. The driving component and the driven component are perpendicular, while the axis of the driven component is vertical. The bottom end of the driven component is the output end of the driven component, and the top end of the driven component is connected to the mounting part. A sliding sleeve is provided on the outer wall of the housing. The axis of the sliding sleeve is vertical, and an elastic unit is provided inside the sliding sleeve.

[0021] By setting a sliding sleeve, the locking structure is fixed, and then the locking disc is connected to the driven component in conjunction with the mounting part; the sliding unit, the elastic unit and the locking disc work together to achieve intermittent locking between the active component and the driven component.

[0022] Preferably, the worm gear reducer further includes an adjusting bolt and a slider. A sliding hole is coaxially formed on the top of the sliding sleeve, and a second threaded hole is coaxially formed inside the sliding hole. The second threaded hole engages with the adjusting bolt. A slider is set on the top of the adjusting bolt and is set inside the sliding hole. An elastic unit is set on the top surface of the slider.

[0023] The locking load can also be adjusted by changing the degree of spring deformation through adjusting the engagement length of the bolt.

[0024] Preferably, the housing includes a first shell, a second shell, a first end cap, and a second end cap. Both the first shell and the second shell are cylindrical. The first shell is horizontally arranged, and the second shell is arranged on one side of the first shell. The second shell is vertically arranged. The cavities of the second shell and the first shell are connected to each other. An active component is arranged inside the first shell. The two ends of the active component are respectively connected to the first end caps arranged at both ends of the first shell.

[0025] A driven component is provided inside the second housing, and the top of the driven component is connected to the second end cap located at the top of the second housing.

[0026] The first housing and the second housing are connected to each other, which is not only used to install the active component and the driven component, but also ensures the engagement of the active component and the driven component at the connection position.

[0027] Preferably, the worm gear reducer further includes a first bearing, and the first bearing is provided on each of the first end covers, and the first bearing is respectively engaged with both ends of the driving component.

[0028] The active component and the first housing are mounted by setting the first bearing.

[0029] Preferably, the worm gear reducer further includes a second bearing, which is disposed on the second end cover and engages with the top of the driven component.

[0030] The installation of the driven assembly and the second housing is achieved by setting a second bearing. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the locking structure in Embodiment 1 of this utility model;

[0032] Figure 2 This is a schematic diagram of the worm gear reducer in Embodiment 1 of this utility model;

[0033] Figure 3 This is an exploded schematic diagram of the worm gear reducer in Embodiment 1 of this utility model;

[0034] Figure 4 yes Figure 2 A cross-sectional diagram from the AA perspective;

[0035] 10. First housing; 11. Second housing; 12. First end cap; 13. Second end cap;

[0036] 2. Screw; 3. First bearing; 4. Turbine; 5. Second bearing; 6. Sliding sleeve; 7. Adjusting bolt;

[0037] 80. Locking disc; 800. Annular raceway; 801. Tapered recess; 81. Spring; 82. Ball pin; 83. Mounting part. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Example 1

[0040] See Figure 1 This embodiment requires protection of the locking structure, including a locking disc 80, a spring 81, a ball pin 82, and a mounting part 83. The locking disc 80 has a disc-shaped structure, and an annular raceway 800 is coaxially opened on its disc surface. The annular raceway 800 is an arc-shaped groove. A set of conical recesses 801 are symmetrically arranged on the annular raceway 800 along the axis of the locking disc 80. The conical recesses 801 refer to the conical holes opened on the disc surface.

[0041] The raceway is not limited to an arc-shaped groove; it can also be a semi-circular groove, as long as the annular raceway 800 and the locking disc 80 are arranged coaxially, and the depth of the conical recess 801 is greater than that of the raceway.

[0042] In addition, the conical recess 801 is not limited to two, but is determined by the required locking angle of the locking disc 80. The conical recess 801 is also not limited to a conical hole, but can also be a triangular hole or a trapezoidal hole.

[0043] The locking disc 80 is coaxially mounted with a mounting part 83, which is used to fix the locking disc 80 to the device to be locked; the mounting part 83 is offset from the annular raceway 800. The mounting part 83 has a stepped cylindrical structure, and a first screw hole is provided at the shoulder of the mounting part 83.

[0044] A spring 81 is provided on one side of the locking disc 80 near the raceway, and a ball pin 82 is provided on the other side of the spring 81. The ball pin 82 is engaged with the raceway.

[0045] The ball joint 82, also known as a ball hinge or ball joint, is existing technology and will not be described further. In actual use, it is not limited to the ball joint 82; it can also be a support rod with ball bearings or swivel casters.

[0046] Example 2

[0047] See Figures 2-4This embodiment is based on Embodiment 1 and requires protection of a worm gear reducer. The worm gear reducer includes a housing, a screw 2, a first bearing 3, a turbine 4, a second bearing 5, a sliding sleeve 6, an adjusting bolt 7, a slider, and a locking structure.

[0048] The housing includes a first housing 10, a second housing 11, a first end cap 12, and a second end cap 13. Both the first housing 10 and the second housing 11 are cylindrical. The first housing 10 is horizontally arranged, and the second housing 11 is arranged on one side of the first housing 10. The second housing 11 is vertically arranged, and the cavities of the second housing 11 and the first housing 10 are connected to each other. A screw 2 is arranged inside the cavity of the first housing 10. The axis of the screw 2 is horizontal, and both ends of the screw 2 are respectively mounted on the corresponding first end caps 12 through first bearings 3. The first end caps 12 are respectively fixed to both ends of the first housing 10 by first bolts.

[0049] A turbine 4 is installed inside the cavity of the second housing 11. The axis of the turbine 4 is vertical. The turbine 4 meshes with the screw 2. The bottom end of the turbine 4 is the output end of the turbine 4. The top end of the turbine 4 shaft is connected to the second end cover 13 through the second bearing 5. The second end cover 13 is located at the top of the second housing 11. A flange is provided at the top end of the turbine 4 shaft. The flange is inserted into the mounting part 83. A flange hole corresponding to the first screw hole is provided on the flange. The second bolt is connected to the flange hole through the first screw hole.

[0050] Two sliding sleeves 6 are symmetrically arranged along the axial direction on the outer wall of the second housing 11. The axial direction of the sliding sleeves 6 is parallel to the axis of the second housing 11. The top of the sliding sleeve 6 is coaxially connected to the sliding hole, and the second threaded hole is coaxially connected to the sliding hole. The adjusting bolt 7 is engaged in the second threaded hole. The top of the adjusting bolt 7 is provided with a slider, which is located in the sliding hole. The top surface of the slider is connected to the ball head pin 82 through the spring 81. The top of the ball head pin 82 is tightly fitted with the raceway.

[0051] The number of sliding sleeves 6 is not limited to two; there can be one or more. When there are multiple sliding sleeves 6, they are arranged in a ring array along the axis of the second housing 11.

[0052] Spring 81 can also be made of other elastic elements such as spring sheets.

[0053] The locking adjustment process for this worm gear reducer is as follows:

[0054] The locking disc 80 is installed on the top of the turbine 4. When the starting screw 2 is started, the turbine 4 is rotated. At this time, the ball head pin 82 slides in the raceway. When the raceway slides into the cone socket 801, the ball head pin 82 and the raceway are tightly fitted together. Under the elastic recovery of the spring 81, the ball head pin 82 is inserted into the cone socket 801, thereby locking the output end of the turbine 4.

[0055] Since the cone socket 801 is symmetrically arranged along the raceway, the output end of the worm gear 4 is locked in both directions by the spring 81, the ball pin 82, the raceway and the cone socket 801, thus realizing the intermittent passive locking and positioning function of the worm gear reducer.

[0056] Based on this, the locking load can be adjusted by changing the deformation of the spring 81 by adjusting the engagement length of the bolt 7.

[0057] The entire structure allows for stepless and precise adjustment of the locking load.

[0058] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A locking structure, characterized in that, It includes a locking disc (80), an elastic unit, and a sliding unit; the surface of the locking disc (80) is provided with an annular slide, and one or more recesses are opened on the slide, the depth of the recesses being greater than the depth of the slide; One end of the locking disc (80) near the slide is provided with an elastic unit, and the other end of the elastic unit is provided with a sliding unit, which abuts and fits in the slide.

2. The locking structure according to claim 1, characterized in that, It also includes a mounting part (83), which is coaxially arranged with the locking plate (80) on one side of the slide.

3. The locking structure according to claim 2, characterized in that, The mounting part (83) has a stepped cylindrical structure, and a first screw hole is provided at the shoulder of the mounting part (83).

4. The locking structure according to claim 1, characterized in that, The elastic element is a spring (81).

5. The locking structure according to claim 1, characterized in that, The sliding unit is a ball-head pin (82).

6. A worm gear reducer employing the locking structure described in any one of claims 1 to 5, characterized in that, It includes a housing, an active component, a driven component, a sliding sleeve (6), and a locking structure; The active component and the driven component are connected to each other inside the housing. The active component and the driven component are perpendicular, the axis of the driven component is vertical, the bottom end of the driven component is the output end of the driven component, and the top end of the driven component is connected to the mounting part (83). A sliding sleeve (6) is provided on the outer wall of the housing. The axis of the sliding sleeve (6) is vertical, and an elastic unit is provided inside the sliding sleeve (6).

7. The worm gear reducer according to claim 6, characterized in that, It also includes an adjusting bolt (7) and a slider. A sliding hole is coaxially opened on the top of the sliding sleeve (6), and a second screw hole is coaxially opened inside the sliding hole. The second screw hole engages with the adjusting bolt (7). A slider is set on the top of the adjusting bolt (7). The slider is set inside the sliding hole, and an elastic unit is set on the top surface of the slider.

8. The worm gear reducer according to claim 7, characterized in that, The housing includes a first housing (10), a second housing (11), a first end cap (12), and a second end cap (13). Both the first housing (10) and the second housing (11) are cylindrical. The first housing (10) is horizontally arranged, and the second housing (11) is arranged on one side of the first housing (10). The second housing (11) is vertically arranged. The cavities of the second housing (11) and the first housing (10) are connected to each other. An active component is arranged inside the first housing (10). The two ends of the active component are respectively connected to the first end caps (12) arranged at both ends of the first housing (10). A driven component is provided inside the second housing (11), and the top of the driven component is connected to the second end cap (13) located at the top of the second housing (11).

9. The worm gear reducer according to claim 7, characterized in that, It also includes a first bearing (3), and the first bearing (3) is provided on the first end cover (12). The first bearing (3) is respectively engaged with both ends of the active component.

10. The worm gear reducer according to claim 7, characterized in that, It also includes a second bearing (5), which is provided on the second end cover (13) and engages with the top of the driven component.

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