Seamless gear box body structure convenient to assemble

Abstract

The utility model discloses a seamless gearbox casing structure convenient to assemble, which comprises a lower casing and an upper cover, at least three positioning shafts are fixed at the bottom of the upper cover, guide holes matched with the positioning shafts are arranged at the top of the lower casing, and the upper cover and the lower casing are fixed through a plurality of self-buckling structures. The self-buckling structure comprises an inverted-cone-shaped self-buckling point and a buckle matched with the inverted-cone-shaped self-buckling point, and the inverted-cone-shaped self-buckling point is fixed to the side portion of the outer side of the lower shell. According to the utility model, rapid and accurate assembly of the upper cover and the lower shell is realized through the positioning shaft and the guide hole, an anti-falling effect is achieved through the inverted cone-shaped self-buckling point, a gap between the upper cover and the lower shell is reduced through the step joint structure, a noise transmission path is blocked, and noise reduction is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of seamless gear box structure of convenient assembly. BACKGROUND

[0002] Traditional gear box is usually assembled by the way of bucking point cooperation or screw mechanical fixation, with the following defects:

[0003] 1, low assembly precision: bucking point or screw fixation lacks accurate positioning, leading to gear shaft hole alignment deviation, affecting transmission stability;

[0004] 2, easy to loosen or misposition: bucking point structure can be loosened in vibration environment, screw fixation relies on artificial locking force, and assembly failure is prone to occur;

[0005] 3, noise problem: due to assembly error or looseness, gear engagement is not smooth, and abnormal sound is prone to occur during operation, which is difficult to meet the requirement of silence;

[0006] 4, affect appearance: gear box joint is large, which affects aesthetic feeling. INVENTION CONTENTS

[0007] In view of the above problems, the utility model provides a kind of seamless gear box structure of convenient assembly, accurate guidance is realized by the accurate guidance of positioning shaft and guide hole and the anti-loosening design of reverse taper self-bucking point, while enhancing structural stability, reducing operating noise, effectively solve the problems pointed out in background art.

[0008] The technical scheme adopted by the utility model is:

[0009] A kind of seamless gear box structure of convenient assembly, including lower shell and upper cover, the bottom of the upper cover is fixed with at least three positioning shafts, the top of the lower shell is provided with guide hole matched with positioning shaft, the upper cover and the lower shell are fixed by multiple self-bucking structures, the self-bucking structure includes reverse taper self-bucking point and buckle matched with reverse taper self-bucking point, and the reverse taper self-bucking point is fixed on the outer side of the lower shell.

[0010] As preferred, the joint surface of the upper cover and the lower shell is a stepped joint structure.

[0011] As preferred, the stepped joint structure includes a ring-shaped clamping groove opened on the outer side of the top of the lower shell and a ring-shaped step fixed on the bottom of the outer side of the upper cover, and the ring-shaped step is matched with the ring-shaped clamping groove.

[0012] As preferred, the lower shell is provided with a fixing groove vertically penetrating the lower shell in the fixed area of the reverse taper self-bucking point, the fixing groove is formed by vertical inward recessing on the outer side of the side wall of the lower shell, the reverse taper self-bucking point is located at the center of the fixing groove, and the root of the reverse taper self-bucking point is smoothly connected with the lower shell.

[0013] The inverted conical self-buckling point is hidden by the fixing groove, so that the inverted conical self-buckling point does not protrude from the side of the overall structure composed of the upper cover and the lower shell, and the overall structure is more reasonable.

[0014] Preferably, the highest part of the inverted conical self-buckling point protrudes from the fixing groove by not more than the outer surface of the side wall of the lower shell.

[0015] The height of the inverted conical self-buckling point is limited to avoid protruding from the side of the lower shell.

[0016] Preferably, the positioning shaft is cylindrical, and the bottom end of the positioning shaft is provided with a conical guide table.

[0017] Preferably, the number of the positioning shafts is three.

[0018] Preferably, the number of the self-buckling structures is seven.

[0019] Preferably, the positioning shaft is located on the inner side of the side wall of the upper cover, and the guide hole is located on the inner side of the side wall of the lower shell.

[0020] The positioning shaft and the guide hole are arranged in the box body, and the self-buckling structure on the outer side is located on the two sides of the stepped joint structure, so that the upper cover and the lower shell are more reasonable when being pressed, and the overall structure is more stable and firm.

[0021] The innovation points of the utility model are as follows:

[0022] 1. The triangular positioning structure of the three positioning shafts and the guide hole:

[0023] Three cylindrical positioning shafts are arranged on the upper cover of the box body, and the corresponding guide hole is arranged on the lower shell, precise alignment is realized through the cooperation of the triangularly distributed shaft holes, and the concentricity of the gear shaft is ensured.

[0024] Innovation: The traditional box body is usually fixed by two-point positioning or screws, and assembly deviation is easy to occur. The utility model forms stable triangular support through the three positioning shafts, and the assembly precision is significantly improved (the error is controlled within ±0.05 mm).

[0025] 2. Anti-disengagement design of the inverted conical self-buckling point:

[0026] The self-buckling point adopts an inverted conical structure, forms a self-locking effect after buckling, and prevents disengagement caused by vibration; the root of the self-buckling point is smoothly connected with the lower shell of the box body, and the shear resistance is improved;

[0027] Innovation: The traditional buckling point is straight columnar or hook-shaped, and is easy to disengage due to vibration. The inverted conical design is self-locked through the inclined surface, and the anti-pulling force is improved by 2 times (actual measurement ≥50N).

[0028] 3. Stepped joint surface:

[0029] The joint surface between the upper cover and the lower shell is designed with a stepped structure. The stepped structure blocks the noise propagation path and greatly reduces the gap between the upper cover and the lower shell.

[0030] Innovation: Traditional enclosures are flat joints, which make it easy for noise to leak through gaps. The stepped structure greatly reduces the gaps, increases the noise attenuation rate by 30%, and reduces the measured noise by 2~5dB(A).

[0031] 4. Optimize the layout and number of self-deduction points:

[0032] Seven self-locking points are evenly distributed, combined with an inverted cone design, to ensure that the upper cover and lower shell are subjected to balanced forces.

[0033] Innovation: Traditional designs typically have 4 to 5 fastening points, which can easily lead to localized stress concentration. The 7-point layout increases the torsional strength of the enclosure by 40%.

[0034] The beneficial effects of this utility model are as follows:

[0035] 1. Improved assembly efficiency and precision:

[0036] The shaft hole guiding design reduces assembly time by more than 50% and eliminates the need for repeated adjustments; the triangular positioning structure controls the concentricity deviation of the gear shaft within ±0.05mm, significantly improving transmission smoothness.

[0037] 2. Enhanced structural stability:

[0038] The inverted cone-shaped self-locking points have a tensile strength of over 50N (compared to only 25N for traditional structures) and showed no loosening during vibration testing (frequency 20~200Hz); the 7-point layout increases the torsional strength of the enclosure by 40%.

[0039] 3. Excellent noise reduction performance:

[0040] The stepped joint structure increases the noise attenuation rate by 30%, and the measured operating noise is reduced to below 45dB(A) (compared to 50dB(A) for traditional enclosures).

[0041] 4. Appearance and reliability optimization:

[0042] The stepped joint structure greatly reduces the gap between the top cover and the bottom shell. The seamless joint design makes the gap width of the cabinet less than 0.1mm, resulting in a more beautiful appearance. The inverted conical fastening points and the stepped joint surface work together to achieve an IP54 waterproof and dustproof rating for the cabinet.

[0043] This invention achieves rapid and accurate assembly of the upper cover and lower shell through the positioning shaft and guide hole. At the same time, the inverted conical self-locking point achieves the effect of preventing detachment. The stepped joint structure reduces the gap between the upper cover and lower shell, blocks the noise propagation path, and achieves noise reduction. Attached Figure Description

[0044] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0045] Fig. 2 This is a schematic diagram of the bottom structure of the top cover;

[0046] Fig. 3 This is a schematic diagram of the top structure of the lower shell. Detailed Implementation

[0047] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0048] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] Furthermore, in the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0051] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "fix", and the like terms should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the communication of two elements inside, for the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0052] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] The utility model will be further described in detail below by specific embodiments in conjunction with the drawings.

[0054] As shown in Figs. 1-3 A kind of convenient assembly seamless gear box structure, including lower shell 1 and upper cover 2, the bottom of the upper cover 2 is fixed with at least three positioning shafts 3, the top of the lower shell 1 is equipped with with the guiding hole 4 matched with positioning shaft 3, the upper cover 2 with lower shell 1 is fixed by multiple self-locking structures, the self-locking structure includes inverted conical self-locking point 5, and buckle 6 matched with inverted conical self-locking point 5, the inverted conical self-locking point 5 is fixed on the outside side of lower shell 1.

[0055] The joint surface of the upper cover 2 and the lower shell 1 is a stepped joint structure.

[0056] The stepped joint structure includes a ring-shaped clamping groove 7 opened on the top outside sidewall of the lower shell 1, and a ring-shaped step 8 fixed on the bottom of the outside sidewall of the upper cover 2, and the ring-shaped step 8 is matched with the ring-shaped clamping groove 7.

[0057] The lower shell 1 is provided with a fixing groove 9 penetrating the lower shell 1 longitudinally at the fixed area of the inverted conical self-locking point 5, the fixing groove 9 is formed by vertically recessing inward from the outside of the sidewall of the lower shell 1, and the inverted conical self-locking point 5 is located at the center of the fixing groove 9.

[0058] The inverted conical self-locking point 5 protrudes from the highest part of the fixing groove 9 by not more than the outside surface of the sidewall of the lower shell 1.

[0059] The positioning shaft 3 is cylindrical, and the bottom end of the positioning shaft 3 is provided with a conical guide table 10.

[0060] The number of the positioning shaft 3 is three.

[0061] The number of the self-buckling structure is seven.

[0062] The positioning shaft 3 is located on the inner side of the side wall of the upper cover 2, and the guide hole 4 is located on the inner side of the side wall of the lower shell 1.

[0063] The convenient assembly seamless gear box structure of the utility model realizes efficient, accurate assembly and stable operation through the following core design:

[0064] 1, triangular positioning system of positioning shaft and guide hole:

[0065] Composition: the upper cover bottom is provided with three cylindrical positioning shafts, and the lower shell top is provided with matching guide holes in the corresponding positions, which are triangularly distributed;

[0066] Working principle:

[0067] Guiding and positioning: the conical guide table at the bottom end of the positioning shaft guides the shaft body to slide into the guide hole during assembly, realizing preliminary alignment;

[0068] Triangular stability: the three positioning shafts form a stable triangular support structure, ensuring the concentricity of the upper cover and the lower shell, and the gear shaft hole alignment deviation is controlled within ±0.05mm;

[0069] Stress balance: the triangular distribution makes the assembly pressure evenly transmitted, avoiding local deformation.

[0070] 2, anti-dropping design of inverted conical self-buckling point:

[0071] Composition: the lower shell outside is provided with an inverted conical self-buckling point, and the upper cover is provided with a buckle at the corresponding position, the root of the self-buckling point is smoothly transitioned with the lower shell and hidden in the fixed groove;

[0072] Working principle:

[0073] Self-locking effect: the radial extrusion force generated by the inverted conical slope during buckling makes the buckle and the self-buckling point tightly engaged, and it is not easy to drop in the vibration environment (anti-pulling force ≥ 50N);

[0074] Shear resistance: the smooth transition root design disperses stress, avoiding stress concentration leading to fracture;

[0075] Concealment: the fixed groove hides the self-buckling point, keeps the appearance flat, and avoids external interference.

[0076] 3, noise reduction and sealing of stepped joint structure:

[0077] Composition: The upper cover bottom is provided with an annular step, and the lower shell top is provided with a matching annular clamping groove, forming a stepped joint surface;

[0078] Working principle:

[0079] Noise blocking: The stepped structure increases the sound reflection path, reduces noise leakage, and the actual measured noise attenuation is 30% (≤45dB(A));

[0080] Seamless sealing: The annular step and the annular clamping groove are tightly nested, the joint width is less than 0.1mm, and the waterproof and dustproof performance (IP54) is improved;

[0081] Structure strengthening: The stepped joint surface increases the contact area, disperses the assembly stress, and improves the overall rigidity.

[0082] 4. Seven-point self-locking layout optimization:

[0083] Composition: Seven self-locking structures are evenly distributed on the joint surface periphery of the upper cover and the lower shell;

[0084] Working principle:

[0085] Balanced stress: Multi-point layout avoids local stress concentration, and the torsional strength is improved by 40%;

[0086] Synergistic fixation: Cooperate with the stepped joint structure to further suppress the micro-displacement caused by vibration.

[0087] 5. Assembly process and synergistic effect:

[0088] Preliminary positioning: Insert the positioning shaft of the upper cover into the lower shell guide hole through the conical guide table to complete the rough positioning;

[0089] Pressing and locking: Apply vertical pressure, and the annular step is embedded in the annular clamping groove, while the inverted conical structure of the seven self-locking points is synchronously buckled to realize seamless fixation;

[0090] Effect verification:

[0091] Accuracy: Triangular positioning ensures the concentricity of the gear shaft, and the transmission is stable;

[0092] Stability: The inverted conical self-locking point and the stepped joint surface jointly resist vibration and torsion;

[0093] Noise reduction: The stepped structure blocks the noise propagation path, and cooperates with the seamless design to reduce abnormal sound.

[0094] Finally, it should be noted that the above is only a specific embodiment of the present application. Obviously, the present application is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or inferred from the content disclosed in the present application by those of ordinary skill in the art should be considered as falling within the scope of protection of the present application.

Claims

1. A conveniently assembled seamless gear case structure, characterized by, The utility model relates to a kind of shell, including lower shell (1) and upper cover (2), the bottom of the upper cover (2) is fixed with at least three positioning shafts (3), the top of the lower shell (1) is equipped with with positioning shaft (3) matching guide hole (4), the upper cover (2) and lower shell (1) are fixed by multiple self-locking structures, the self-locking structure includes inverted conical self-locking point (5), and buckle (6) is matched with inverted conical self-locking point (5), the inverted conical self-locking point (5) is fixed on the outside side of lower shell (1).

2. A structure of a seamless gear case according to claim 1, wherein The joint surface of the upper cover (2) and the lower shell (1) is a stepped joint structure.

3. A structure for a seamless gear case, according to claim 2, wherein The stepped joint structure includes a ring-shaped clamping groove (7) opened on the top outside sidewall of the lower shell (1), and a ring-shaped step (8) fixed on the bottom of the outside sidewall of the upper cover (2), the ring-shaped step (8) is matched with the ring-shaped clamping groove (7).

4. A structure for a seamless gear case according to claim 1, wherein The lower shell (1) is provided with a fixing groove (9) penetrating the lower shell (1) longitudinally in the fixed area of the inverted conical self-locking point (5), the fixing groove (9) is formed by vertically recessing inward from the outside sidewall of the lower shell (1), and the inverted conical self-locking point (5) is located at the center of the fixing groove (9).

5. A structure for a seamless gear case according to claim 4, wherein The inverted conical self-locking point (5) protrudes from the highest point of the fixing groove (9) by not more than the outside surface of the sidewall of the lower shell (1).

6. A structure for a seamless gear case according to claim 1, wherein The positioning shaft (3) is cylindrical, and the bottom end of the positioning shaft (3) is provided with a conical guide table (10).

7. A structure for a seamless gear case according to claim 1, wherein The number of positioning shafts (3) is three.

8. A structure for a seamless gear case according to claim 1, wherein The number of self-locking structures is seven.

9. A structure for a seamless gear case according to claim 1, wherein The positioning shaft (3) is located inside the sidewall of the upper cover (2), and the guide hole (4) is located inside the sidewall of the lower shell (1).

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