Ball joint mechanism with damping

Abstract

The utility model provides a ball joint mechanism with damping, which comprises a ball body and a shell capable of containing the ball body, an elastic device is further installed in the shell, the elastic device comprises an upper cover, an elastic piece and a lower cover from top to bottom, a vertical ball handle is arranged on the upper portion of the ball body, and the lower portion of the ball handle is connected with the elastic piece. The ball is of a hollow structure, a horizontal notch is formed in the lower portion of the ball, and the upper surface of the upper cover makes contact with or does not make contact with the lower portion of the ball. The upper cover can move up and down in the shell, and the lower cover is fixedly installed in the shell. A guide sleeve is arranged on the lower end face of the upper cover, and a guide column capable of being inserted into the guide sleeve is arranged on the upper end face of the lower cover. A base is arranged at the lower end of the shell. According to the utility model, the guide sleeve is matched with the guide post, so that the upper cover can be prevented from deflecting and clamping stagnation in the up-and-down moving process.

Description

Technical Field

[0001] The utility model relates to the technical field of ball joints, and particularly relates to a ball joint mechanism with damping. Background Art

[0002] A ball joint is a common mechanical structure that enables the object mounted on it to swing and rotate freely in multiple directions. For example, a pan-tilt for mounting cameras and video cameras is a typical ball joint. A ball joint usually consists of a housing with a spherical mounting groove and a sphere, and the sphere is movably mounted inside the housing.

[0003] The specification of Chinese Utility Model Patent No. 2024202222621 discloses a ball joint mechanism capable of adjusting the damping magnitude, which includes a housing, a sphere and an elastic device mounted inside the housing. The elastic device includes a ball support, an elastic member and a support member from top to bottom. The ball support is used to support the sphere. The lower part of the sphere is provided with a horizontal section, and the upper surface of the ball support is a plane. When this ball joint mechanism is in use, that is, when the sphere pushes the ball support downward, the ball support is prone to a certain deflection, resulting in jamming with the inner wall of the housing and affecting the use effect. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a ball joint mechanism with damping that can avoid jamming.

[0005] To solve the above technical problem, the technical solution of the utility model is: a ball joint mechanism with damping, which includes a sphere and a housing capable of accommodating the sphere. An elastic device is also mounted inside the housing. The elastic device includes an upper cover, an elastic member and a lower cover from top to bottom. The upper part of the sphere is provided with a vertical ball handle. The sphere is a hollow structure and has a horizontal cut at the lower part. The upper surface of the upper cover is in contact or not in contact with the lower part of the sphere. The upper cover can move up and down inside the housing, and the lower cover is fixedly mounted inside the housing. A guide sleeve is provided on the lower end surface of the upper cover, and a guide post that can be inserted into the guide sleeve is provided on the upper end surface of the lower cover. A base is provided at the lower end of the housing.

[0006] In the above technical solution, since the lower cover provides elastic support for the upper cover through the elastic member, the sphere is a hollow structure and has a horizontal cut at the lower part, and the upper surface of the upper cover is in contact or not in contact with the lower part of the sphere. Since the distance from the lower part of the sphere to the center of the sphere < the distance from the spherical surface to the center of the sphere, when the sphere is rotated inside the housing by hand to make the spherical surface contact the upper surface of the upper cover, the sphere will push the upper cover to move downward against the elastic force of the elastic member. Once the hand is released, the elastic force of the elastic member will act on the upper cover to push the sphere back to its original position, so that the lower part of the sphere contacts or corresponds to the upper surface of the upper cover. The matching setting of the guide sleeve and the guide post can avoid deflection and jamming of the upper cover during the up and down movement.

[0007] In one embodiment, a raised frustum is provided in the middle of the upper end surface of the upper cover. A conical surface or a spherical surface is formed between the periphery of the frustum and the upper end surface of the upper cover. Preferably, the included angle between the conical surface or the spherical surface and the frustum is 15° to 30°. By providing such a conical surface or a spherical surface, when the sphere is rotated by pulling, the sphere can always act on the conical surface or the spherical surface, so that good contact is always maintained between the sphere and the upper cover, and thus the upper cover can be better pushed to move downward against the elastic force of the elastic member.

[0008] In one embodiment, the lower cover is installed in the housing by means of threaded connection.

[0009] In one embodiment, the lower cover is fixedly connected to the base by screws.

[0010] Further, the elastic member is a compression spring, including a main compression spring with a large coil diameter and a micro-force compression spring with a small coil diameter. The micro-force compression spring is sleeved outside the main compression spring, and the length of the main compression spring is less than that of the micro-force compression spring. When the distance between the lower cover and the upper cover is adjusted to the maximum, the micro-force compression spring can press them tightly to avoid some unpleasant sounds caused by the shaking of the parts.

[0011] In one embodiment, the base can rotate circumferentially relative to the housing, and a locking screw is provided on the housing to limit the circumferential rotation between the housing and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the ball joint mechanism in Embodiment 1 of the present invention;

[0013] Figure 2 It is a schematic structural diagram of the upper cover in Embodiments 1, 2, and 3 of the present invention;

[0014] Figure 3 It is a schematic structural diagram of the lower cover in Embodiments 1 and 2 of the present invention;

[0015] Figure 4 It is a schematic structural diagram of the ball joint mechanism in Embodiment 2 of the present invention;

[0016] Figure 5 It is a schematic structural diagram of the ball joint mechanism in Embodiment 3 of the present invention;

[0017] The reference numerals are:

[0018] 1. Sphere; 2. Housing; 3. Upper cover; 3a. Guide sleeve; 3b. Frustum; 4. Lower cover; 4a. Guide post; 5. Base; 6. Locking screw; 7. Rotating body substrate; 8. Main compression spring; 9. Micro-force compression spring; 10. Bushing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the purpose, technical solutions and advantages of the utility model more clear and understandable, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not limited to the present utility model. Embodiment 1

[0020] As Figures 1 to 3 shown, a ball joint mechanism with damping includes a sphere 1 and a housing 2 capable of accommodating the sphere 1. A bushing 10 is provided between the sphere 1 and the housing 2. A resilient device is also installed in the housing 2. The resilient device includes an upper cover 3, an elastic member, and a lower cover 4 from top to bottom. The upper cover 3 is used to support the sphere 1. The upper part of the sphere 1 is provided with a vertical ball handle. The sphere 1 is a hollow structure and has a horizontal cut at the lower part. The upper surface of the upper cover 3 contacts or does not contact the lower part of the sphere 1. The upper cover 3 can move up and down in the housing 2. The lower cover 4 is fixedly installed in the housing 2. A guide sleeve 3a is provided on the lower end surface of the upper cover 3, and a guide post 4a capable of being inserted into the guide sleeve 3a is provided on the upper end surface of the lower cover 4. A base 5 is provided at the lower end of the housing 2. The lower cover 4 and the base are fixedly connected by screws.

[0021] In this embodiment, since the lower cover 4 provides elastic support for the upper cover 3 through the elastic member, the sphere 1 is a hollow structure and has a horizontal cut at the lower part, and the upper surface of the upper cover 3 contacts or does not contact the lower part of the sphere 1. Since the distance between the lower part of the sphere 1 and the center of the sphere < the distance between the spherical surface and the center of the sphere, when the sphere 1 is rotated in the housing 2 by hand to make the spherical surface contact the upper surface of the upper cover 3, the sphere 1 will push the upper cover 3 to move downward against the elastic force of the elastic member. Once the hand is released, the elastic force of the elastic member will act on the upper cover 3 to push the sphere 1 back to its original position, so that the horizontal cut of the sphere 1 contacts or corresponds to the upper surface of the upper cover 3. The cooperation of the guide sleeve 3a and the guide post can prevent the upper cover 3 from deflecting and jamming during the up and down movement.

[0022] A raised frustum 3b is provided in the middle of the upper end surface of the upper cover 3. A conical surface or a spherical surface is formed between the periphery of the frustum 3b and the upper end surface of the upper cover 3. The included angle between the conical surface or the spherical surface and the frustum 3b is 154a guide post ° to 30°. The setting of this conical surface facilitates that when the sphere 1 is rotated, the sphere 1 can always act on the conical surface, so that good contact is always maintained between the sphere 1 and the upper cover 3, and thus the upper cover 3 can be better pushed to move downward against the elastic force of the elastic member.

[0023] As Figure 1As shown in the figure, the elastic member in this embodiment adopts a compression spring, including a main compression spring 8 with a large coil diameter and a micro-force compression spring 9 with a small coil diameter. The micro-force compression spring 9 is sleeved outside the main compression spring 8, and the length of the main compression spring 8 is less than that of the micro-force compression spring 9. When the distance between the lower cover 4 and the upper cover 3 is adjusted to the maximum, the micro-force compression spring 9 can tightly press the two to avoid some unpleasant sounds caused by the shaking of the parts. Obviously, the elastic member can also adopt a hydraulic cylinder or elastic rubber. Embodiment 2

[0024] As Figures 2 to 4 shown in the figure, the basic structure and principle of the ball joint mechanism provided in this embodiment are the same as those in Embodiment 1. The differences are as follows: First, the lower cover 4 is installed in the housing 2 by means of threaded connection; Second, a rotating body substrate is installed between the housing 2 and the base, and a rotating body passing through the rotating body substrate is installed above the base, so that the base can rotate circumferentially relative to the housing 2, and a locking screw is provided on the housing 2 to limit the circumferential rotation between the rotating body and the housing 2. Embodiment 3

[0025] As Figure 2 、 5 shown in the figure, this embodiment is a further improvement based on Embodiment 2. The lower cover 4 and the rotating body are combined into one part, making the overall structure simpler.

[0026] The above embodiments are the preferred implementation solutions of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the scope of the present invention patent.

[0027] In order to make it more convenient for those of ordinary skill in the art to understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and for the sake of clarity, some other elements have also been omitted in this application document. Those of ordinary skill in the art should be aware that these omitted elements can also constitute the content of the present invention.

Claims

1. A ball joint mechanism with damping, comprising a sphere (1) and a housing (2) capable of accommodating the sphere (1). A elastic device is further installed in the housing (2). The elastic device includes an upper cover (3), an elastic member, and a lower cover (4) from top to bottom. A vertical ball handle is provided at the upper part of the sphere (1). The sphere (1) is a hollow structure and has a horizontal incision at the lower part. The upper surface of the upper cover (3) is in contact or not in contact with the lower part of the sphere (1); It is characterized in that: The upper cover (3) can move up and down within the housing (2), and the lower cover (4) is fixedly installed within the housing (2); a guide sleeve (3a) is provided on the lower end surface of the upper cover (3), and a guide post (4a) that can be inserted into the guide sleeve (3a) is provided on the upper end surface of the lower cover (4); a base (5) is provided at the lower end of the housing (2).

2. The ball joint mechanism with damping according to claim 1, characterized in that: A convex frustum (3b) is provided in the middle of the upper end surface of the upper cover (3), and a conical surface or a spherical surface is formed between the periphery of the frustum (3b) and the upper end surface of the upper cover (3).

3. The ball joint mechanism with damping according to claim 2, characterized in that: The included angle between the conical surface or the spherical surface and the frustum (3b) is 15° to 30°.

4. The ball joint mechanism with damping according to any one of claims 1 to 3, characterized in that: The lower cover (4) is installed within the housing (2) by means of a threaded connection.

5. The ball joint mechanism with damping according to any one of claims 1 to 3, characterized in that: The lower cover (4) is fixedly connected to the base (5) by screws.

6. The ball joint mechanism with damping according to any one of claims 1 to 3, characterized in that: The elastic member is a compression spring, including a main compression spring (8) with a large coil diameter and a micro-force compression spring (9) with a small coil diameter. The length of the main compression spring (8) is less than the length of the micro-force compression spring (9).

7. The ball joint mechanism with damping according to any one of claims 1 to 3, characterized in that: The base (5) can rotate circumferentially relative to the housing (2), and a locking screw (6) is provided on the housing (2) to limit the circumferential rotation between the housing (2) and the base (5).

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