Novel speed reducer box body and speed reducer

Abstract

The utility model relates to the technical field of speed reducers, and discloses a novel speed reducer box which comprises a box body, the box body comprises a half-kidney-shaped block and a half-cylinder which are integrally formed, and the two ends of the arc-shaped portion of the half-cylinder are tangent to the upper side wall and the lower side wall of the half-kidney-shaped block respectively. The planes of the two ends of the semi-cylinder are flush with the two side faces of the semi-kidney-shaped block respectively; worm gear holes are formed in the half-kidney-shaped blocks in the vertical direction, and worm holes are formed in the semi-cylinders and the half-kidney-shaped blocks. The speed reducer comprises the novel speed reducer box body. The problems that an existing square box is large in size, complex in structure and small in adaptive range are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a speed reducer technical field especially relates to a novel speed reducer box body and speed reducer. BACKGROUND

[0002] In the existing speed reducer technical field, the common speed reducer box body structure form has many disadvantages. Taking the prior art of patent number CN201920830140.X a worm gear reducer box body and CN202021211036.1 a worm gear reducer square box as an example, the box body mostly presents the relatively conventional square structure. The box body structure is relatively complex, and in the machining manufacturing process, the machining of numerous right-angle edges, edges and internal complex cavities is involved, which undoubtedly increases the difficulty and cost of the machining process. Moreover, due to the large overall volume, it is difficult to realize adaptive installation in many places with strict space size limitation, greatly limiting the application range of the speed reducer. Therefore, developing a speed reducer box body and speed reducer with more compact structure, low processing difficulty and strong adaptability has become a problem to be solved in the field. SUMMARY

[0003] The utility model aims at providing a novel speed reducer box body and speed reducer, solving the problems of large volume, complex structure and small adaptive range of the existing square box.

[0004] The above technical purpose of the utility model is realized by the following technical scheme:

[0005] A novel speed reducer box body, comprising a box body, the box body comprises an integrally formed half-lap block and a half-cylinder, the arc-shaped part of the half-cylinder is tangent to the upper side wall and the lower side wall of the half-lap block at both ends respectively, and the two end planes of the half-cylinder are flush with the two side faces of the half-lap block;

[0006] The half-lap block is formed with a worm hole arranged in the up-down direction, and the half-cylinder and the half-lap block are formed with a worm hole. Through the above arrangement, the outer wall of the box body is two arc faces, two pairs of planes and the planes are tangent to the corresponding arc faces, the structure is more compact and small, can be applied to more places, and the die casting forming and later machining work of the parts are facilitated; meanwhile, the outer surface is smooth, the corners are reduced, and the appearance is more beautiful.

[0007] A speed reducer, comprising the novel speed reducer box body, a worm wheel, a worm and an output shaft, the worm wheel and the output shaft are integrally formed and both are rotatably connected in the worm hole, the two ends of the output shaft are formed with output connection holes, and the worm is rotatably connected in the worm hole and the input end of the worm is formed with an input connection hole. The integrally formed worm wheel and output shaft can simplify the machining process and assembly process of the worm wheel and output shaft, and further improve the relative positional relationship accuracy between the worm wheel and the worm.

[0008] The utility model further sets up: the both ends of worm gear hole are connected with output end cover, output shaft is connected with worm gear hole through first bearing, and first bearing is clamped between the shaft shoulder of output shaft and output end cover. The position of first bearing can be limited through output end cover, so that the position of worm gear can be determined, so that it can engage with worm in correct position, and worm gear and worm are prevented from being stuck through improving assembly accuracy.

[0009] The utility model further sets up: the one end of worm is formed with step post far from input end, step post is connected with worm hole through second bearing, and second bearing is clamped between step post and worm end cover, and worm end cover is fixed on box body,

[0010] The input end of worm is connected with worm hole through third bearing, and the outside of third bearing is equipped with baffle ring, and baffle ring is inserted in the baffle ring groove of box body. The position of second bearing can be limited through worm end cover, the position of third bearing can be limited through baffle ring, and second bearing and third bearing limit the position of worm, so that the engagement accuracy of worm and worm gear is improved.

[0011] The utility model further sets up: the end of output shaft is lower than output end cover,

[0012] First clamping groove is formed on output end cover, second clamping groove is formed on the inner wall of worm gear hole, and C type ring is inserted between first clamping groove and second clamping groove.

[0013] Output shaft is lower than output end cover, can further reduce the volume of speed reducer, can adapt to the demand of some special scenes, and C type ring can prevent output end cover from separating from box body.

[0014] The utility model further sets up: the inner end of C type ring is formed with taper surface, and taper surface can play the role of guiding during assembly, so that C type ring is automatically opened outward, so that the assembly work of output end cover is facilitated.

[0015] The utility model has the advantages of:

[0016] Compared with the prior art, the compact structure design: the unique half waist type block and half cylinder integrated structure significantly reduce unnecessary space occupation compared with the traditional square box. The two arc surfaces and two pairs of planes of the outer wall of the box body are tangent, so that the overall shape is more regular and smooth, and can be better arranged in limited space, especially suitable for narrow working environment with strict requirements on equipment volume, such as transmission system inside precision instruments and driving device of small automatic production line, greatly expanding the application scenarios of speed reducer.

[0017] Optimization of appearance: the smooth design of the outer surface and the reduction of edges not only improves the appearance of the box, making it more in line with the aesthetic requirements of modern industrial products for appearance design, but also enhances the safety of the product. In actual use scenarios, the risk of accidental collision and injury to the operator is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of a new speed reducer box;

[0019] Figure 2 is a schematic view of speed reducer embodiment 1;

[0020] Figure 3 is a sectional view of speed reducer embodiment 1;

[0021] Figure 4 is Figure 3 is a sectional view of A-A;

[0022] Figure 5 is a schematic view of speed reducer embodiment 2;

[0023] Figure 6 is Figure 5 is a local enlarged view of B.

[0024] Reference signs: 1, box body; 10, half waist type block; 11, half cylinder; 12, worm hole; 13, worm hole; 14, second clamping groove;

[0025] 2, worm;

[0026] 3, worm; 31, input connection hole; 32, stepped column;

[0027] 4, output shaft; 41, output connection hole;

[0028] 5, output end cover; 51, first clamping groove;

[0029] 3, lifting lug seat; 31, threaded hole; 32, sliding groove;

[0030] 4, driving mechanism; 41, support plate; 42, lifting arm; 43, speed reducer; 44, gear; 45, rack;

[0031] 71, first bearing; 72, second bearing; 73, third bearing; 74, check ring;

[0032] 8, C-shaped ring; 81, conical surface. DETAILED DESCRIPTION

[0033] The specific embodiments of the present application will be further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0034] The following is for reference Figures 1 to 6 The present invention will be described as follows:

[0035] Gearbox housing embodiment

[0036] A new type of gearbox housing, such as Figure 1 As shown, the box body 1 includes an integrally formed semi-waist-shaped block 10 and a semi-cylinder 11. The two ends of the arc-shaped part of the semi-cylinder 11 are tangent to the upper side wall and the lower side wall of the semi-waist-shaped block 10, respectively. The two end planes of the semi-cylinder 11 are flush with the two sides of the semi-waist-shaped block 10, respectively.

[0037] The semi-waisted block 10 has worm gear holes 12 formed in the vertical direction, and the semi-cylinder 11 and the semi-waisted block 10 have worm holes 13 formed. With the above configuration, the outer wall of the box body has two arc surfaces and two pairs of planes, with the planes tangent to the corresponding arc surfaces. Its structure is more compact and small, suitable for more places, and facilitates the die casting and subsequent machining of parts; at the same time, its outer surface is smooth, with fewer sharp edges, making its appearance more beautiful.

[0038] Speed ​​reducer Example 1

[0039] A type of speed reducer, such as Figure 2 , Figure 3 As shown, the new type of reducer includes a housing, a worm gear 2, a worm 3, and an output shaft 4. The worm gear 2 and the output shaft 4 are integrally formed and both are rotatably connected within the worm gear bore 12. Output connection holes 41 are formed at both ends of the output shaft 4; these output connection holes can be spline holes. The worm 3 is rotatably connected within the worm bore 13, and an input connection hole 31 is formed at the input end of the worm 3. The integral forming of the worm gear and the output shaft simplifies the machining and assembly processes of the worm gear and the output shaft, and also further improves the accuracy of the relative positional relationship between the worm gear and the worm.

[0040] The present invention is further configured such that: a stepped column 32 is formed at the end of the worm gear 3 away from the input end; the stepped column 32 is connected to the worm gear hole 13 through a second bearing 72; the second bearing 72 is clamped between the stepped column 32 and the worm gear end cover 6; and the worm gear end cover 6 is fixed on the housing body 1.

[0041] The input end of the worm 3 is connected to the worm hole 13 via a third bearing 73. A retaining ring 74 is provided on the outer side of the third bearing 73, and the retaining ring 74 is inserted into the retaining ring groove of the housing body 1. The position of the second bearing can be restricted by the worm end cap, and the position of the third bearing can be restricted by the retaining ring. The second and third bearings limit the position of the worm, thereby improving the meshing accuracy of the worm and worm wheel.

[0042] like Figure 4As shown, the worm hole 12 is connected with an output end cover 5 at both ends; the output shaft 4 is connected with the worm hole 12 through a first bearing 71, which is clamped between the shaft shoulder of the output shaft 4 and the output end cover 5. The position of the first bearing can be limited through the output end cover, so that the position of the worm can be determined, so that it can be engaged with the worm in the correct position, and the worm and gear jamming phenomenon can be prevented by improving the assembly accuracy.

[0043] Speed reducer embodiment 2

[0044] As shown in Figure 5 , Figure 6 The end of the output shaft 4 is lower than the output end cover 5;

[0045] The output end cover 5 is formed with a first clamping groove 51, and the inner wall of the worm hole 13 is formed with a second clamping groove 14, and the C-shaped ring 8 is sleeved between the first clamping groove 51 and the second clamping groove 14.

[0046] The output shaft is lower than the output end cover, which can further reduce the volume of the speed reducer, and can adapt to the needs of some special scenes, and the C-shaped ring can prevent the output end cover from being separated from the box body.

[0047] The inner end of the C-shaped ring 8 is formed with a tapered surface 81, which can play a guiding role during assembly, and the C-shaped ring can be automatically expanded outward, so as to facilitate the assembly work of the output end cover;

[0048] The other structures are the same as those shown in embodiment 1.

[0049] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and the above assumptions These improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A novel gearbox housing, comprising a housing body (1), characterized in that: The box body (1) includes an integrally formed semi-waist block (10) and a semi-cylinder (11). The two ends of the arc-shaped part of the semi-cylinder (11) are tangent to the upper side wall and the lower side wall of the semi-waist block (10), respectively. The two end planes of the semi-cylinder (11) are flush with the two sides of the semi-waist block (10), respectively. The semi-waisted block (10) is formed with a worm gear hole (12) arranged in the vertical direction, and the semi-cylinder (11) and the semi-waisted block (10) are formed with a worm hole (13).

2. A speed reducer, characterized in that: The new type of reducer housing as described in claim 1 includes a worm gear (2), a worm (3), and an output shaft (4); the worm gear (2) and the output shaft (4) are integrally formed and both are rotatably connected in the worm gear hole (12), and output connection holes (41) are formed at both ends of the output shaft (4); the worm (3) is rotatably connected in the worm hole (13), and the input end of the worm (3) is formed with an input connection hole (31).

3. A speed reducer according to claim 2, characterized in that: The two ends of the worm gear hole (12) are connected to the output end cap (5); the output shaft (4) is connected to the worm gear hole (12) through the first bearing (71), and the first bearing (71) is clamped between the shoulder of the output shaft (4) and the output end cap (5).

4. A speed reducer according to claim 3, characterized in that: The worm (3) has a stepped post (32) formed at the end away from the input end. The stepped post (32) is connected to the worm hole (13) through the second bearing (72). The second bearing (72) is clamped between the stepped post (32) and the worm end cap (6). The worm end cap (6) is fixed on the housing body (1). The input end of the worm (3) is connected to the worm hole (13) through the third bearing (73). A retaining ring (74) is provided on the outside of the third bearing (73), and the retaining ring (74) is inserted into the retaining ring groove of the housing body (1).

5. A speed reducer according to claim 3, characterized in that: The end of the output shaft (4) is lower than the output end cover (5). The output end cap (5) has a first slot (51) formed on it, and the inner wall of the worm gear hole (12) has a second slot (14) formed on it. A C-ring (8) is sleeved between the first slot (51) and the second slot (14).

6. A speed reducer according to claim 5, characterized in that: The inner end of the C-ring (8) is formed with a conical surface (81).

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