Support connecting device

Abstract

The utility model relates to a support, in particular to a support connecting device which comprises a first sleeve and a second sleeve. The damping device comprises a fixing piece, two damping balls, an elastic piece and a rotating shell, the fixing piece is provided with a through groove, the elastic piece is installed in the groove, the two damping balls are arranged at the two ends of the elastic piece, the fixing piece is connected with the first sleeve, the rotating shell is connected with the second sleeve, and the fixing piece is sleeved with the rotating shell; at least part of the second sleeve sleeves the annular step of the first sleeve; the inner wall of the rotating shell is provided with a plurality of grooves arranged at intervals in a surrounding mode in the radial direction, the positions of the grooves are matched with those of the damping balls, and the grooves are used for generating regular damping between the grooves and the two damping balls when the second sleeve drives the rotating shell to rotate. By means of the structure, the damping device can be arranged between the first sleeve and the second sleeve, rotation damping is provided by means of abutting between the groove and the damping ball, rotation precision is improved, and installation is easy.

Description

Technical Field

[0001] The utility model relates to a bracket, in particular to a bracket connecting device. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] The existing connecting pieces between the two arms of the bracket are generally connected by direct bearings. However, when the bracket is required to fix precision instruments, electronic products, etc., the traditional roller bracket cannot control the precise angle, so it is inconvenient to use.

[0004] There are some bracket connection devices that can provide angle identification and rotational damping. The main solution is to set corresponding friction plates or friction pads at the connecting shaft. Their control accuracy is still poor and they wear quickly. Others are to set magnetorheological damping at the connecting shaft and embed magnetorheological fluid cavities in the rotating parts. These have higher accuracy, but require the intervention of the electronic control system, are costly, and are not easy to assemble.

[0005] It should be noted that the above technical background is merely for the purpose of providing a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. It should not be assumed that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present invention. Utility Model Content

[0006] The purpose of the utility model is to provide a bracket connection device, which can provide rotational damping by arranging a damping device between a first sleeve and a second sleeve, thereby improving rotation accuracy and facilitating installation by means of the interference between the groove and the damping ball.

[0007] In order to achieve the above-mentioned object, the present invention discloses the following bracket connecting device, which is used to connect the first arm and the second arm of the bracket, and the bracket connecting device includes:

[0008] a first sleeve connected to the rotating end of the first arm;

[0009] a second sleeve connected to the rotating end of the second arm;

[0010] A damping device, comprising a fixing member, two damping balls, an elastic member, and a rotating shell, wherein the fixing member has a through groove, the elastic member is mounted in the groove, the two damping balls are mounted at both ends of the elastic member, the fixing member is connected to the first sleeve, the rotating shell is connected to the second sleeve, and the rotating shell is sleeved outside the fixing member so that the two damping balls abut against the inner wall of the rotating shell under the action of the elastic member;

[0011] The top of the first sleeve is retracted into an annular step, and at least a portion of the second sleeve is sleeved on the annular step of the first sleeve;

[0012] The inner wall of the rotating shell has a plurality of grooves arranged radially and spaced apart, and the positions of the plurality of grooves match the two damping balls. The plurality of grooves are used to generate regular damping between the second sleeve and the two damping balls when the rotating shell is driven to rotate by the second sleeve.

[0013] As a further description of the above technical solution, there are multiple grooves in the fixing member, and the multiple grooves do not intersect with each other. Each groove is further provided with two damping balls for resisting the rotating shell, and an elastic member between the two damping balls.

[0014] As a further description of the above technical solution, the number of the slots in the fixing member is two, and the two slots are vertically arranged along the horizontal direction.

[0015] As a further description of the above technical solution, a scale is provided on the first sleeve, and the scale spacing of the scale matches the spacing between the multiple grooves of the rotating shell.

[0016] As a further description of the above technical solution, a sliding groove is provided on the periphery of the first sleeve, a key is provided on the rotating shell, the key is installed in the sliding groove, and the sliding groove is used to limit the moving range of the key.

[0017] As a further description of the above technical solution, the range of the slide groove matches the maximum measuring range of the scale.

[0018] As a further description of the above technical solution, the bottom of the fixing member has a protruding pin, and the top of the first sleeve has a through hole matching the position of the pin. The pin is installed in the through hole so that the rotation of the fixing member relative to the first sleeve is limited.

[0019] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0020] The bracket connecting device of the present invention can be configured by arranging a damping device between a first sleeve and a second sleeve, wherein the fixing part of the damping device is connected to a relatively fixed first arm, and the rotating shell of the damping device is connected to a relatively rotating second sleeve. The fixing part, through a damping ball connected to an elastic part installed therein, generates a resistance relationship between grooves arranged at intervals on the inner wall of the rotating shell, so as to form a clear damping feeling during the rotation process, and the damping range adjustment according to different needs can be achieved by setting different groove spacings.

[0021] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 is a cross-sectional schematic diagram of a bracket connection device provided in an embodiment of this specification;

[0024] Figure 2 This is an exploded schematic diagram of a bracket connection device provided in an embodiment of this specification;

[0025] Figure 3 This is a disassembly diagram of a bracket connection device provided in an embodiment of this specification;

[0026] Figure 4 This is a perspective cross-sectional view of a bracket connection device provided in an embodiment of this specification;

[0027] In the figure: 100, first arm; 200, second arm; 1, first sleeve; 11, annular step; 12, slide groove; 2, second sleeve; 3, damping device; 31, fixing member; 311, groove; 312, pin; 32, damping ball; 33, elastic member; 34, rotating shell; 341, groove; 342, key; 4, scale. DETAILED DESCRIPTION

[0028] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments derived by those skilled in the art based on the embodiments in this specification without creative effort shall fall within the scope of protection of this specification.

[0029] The following is an explanation of the implementation of the present invention through specific specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following implementation methods will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0030] It should be understood that although terms such as "first," "second," and "third" may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. In addition, the term "or" as used herein may include any one or more combinations of the associated listed items, as appropriate.

[0031] See Figure 1-4 , is a bracket connecting device of this embodiment, used to connect the first arm 100 and the second arm 200 of the bracket, wherein the bracket connecting device includes:

[0032] A first sleeve 1, the first sleeve 1 is connected to the rotating end of the first arm 100;

[0033] A second sleeve 2, the second sleeve 2 is connected to the rotating end of the second arm 200;

[0034] The damping device 3 includes a fixing member 31, two damping balls 32, an elastic member 33, and a rotating shell 34. The fixing member 31 has a through groove 311, and the elastic member 33 is installed in the groove 311. The two damping balls 32 are respectively installed at both ends of the elastic member 33. The fixing member 31 is connected to the first sleeve 1, and the rotating shell 34 is connected to the second sleeve 2. The rotating shell 34 is sleeved outside the fixing member 31, so that the two damping balls 32 are in contact with the inner wall of the rotating shell 34 under the action of the elastic member 33;

[0035] The top of the first sleeve 1 is retracted into an annular step 11, and at least part of the second sleeve 2 is sleeved on the annular step 11 of the first sleeve 1;

[0036] The inner wall of the rotating shell 34 has multiple grooves 341 arranged radially and spaced apart. The positions of the multiple grooves 341 match the two damping balls 32. The multiple grooves 341 are used to generate regular damping between the two damping balls 32 when the second sleeve 2 drives the rotating shell 34 to rotate.

[0037] Through the above structure, when in use, the operator applies a torque to the second arm 200, so that the second arm 200 drives the second sleeve 2 to rotate relative to the first sleeve 1, and the second sleeve 2 drives the rotating shell 34 to rotate relative to the fixed part 31. During the rotation process, the damping ball 32 in the groove 311 of the fixed part 31 is squeezed by the elastic part 33 and rubs against the groove 341. During the switching of different grooves 341, the arc-shaped interface of the groove 341 exerts different resistance on the damping ball 32, which produces a regular damping feeling on the rotation of the rotating shell 34. When the damping ball 32 falls into the deepest part of the groove 341, the contact area between the damping ball 32 and the groove 341 is the largest at this time, so that the maximum damping between the two is generated at this time. Therefore, whenever the damping ball 32 just falls into the corresponding groove 341, a positioning effect is produced.

[0038] Therefore, during the aforementioned rotation process, the operator does not need to repeatedly rotate the second arm 200 to position the rotation angle. The rotation angle of the second arm 200 is already limited to multiple preset ranges by the groove 341 of the rotating housing 34. If the operator is not satisfied with the angle of the second arm 200 at maximum damping, they can fine-tune it within two adjacent damping ranges with smaller swing ranges (for example, they can directly fine-tune the rotation angle between the first arm 100 and the base), still achieving the most accurate positioning quickly.

[0039] Through the above structure, compared with existing friction plates or friction pad devices, the rotation angle of the second arm 200 can be controlled more linearly, and the damping ball 32 can be set to a common steel ball, and the elastic member 33 can be set to a common coil spring, which is cheap and easy to obtain, and has a low production cost.

[0040] Furthermore, the fixing member 31 has multiple slots 311, each of which does not intersect. Each slot 311 is further provided with two damping balls 32 for contacting the rotating shell 34, and an elastic member 33 between the two damping balls 32. Specifically, the fixing member 31 has two slots 311, each of which is arranged perpendicularly along the horizontal direction. The provision of two sets of damping balls 32 in this embodiment ensures that the resistance provided by the damping balls 32 during the rotation of the second arm 200 is more stable and uniform. Of course, in other embodiments, more sets of damping balls 32 can be added as needed, or elastic members 33 of varying strength can be replaced.

[0041] Furthermore, if Figure 3 As shown, the first sleeve 1 is provided with a scale 4, the scale 4 having a scale interval that matches the spacing between the multiple grooves 341 of the rotating housing 34. In other words, in this embodiment, the scale 4 travels through a corresponding scale interval for each unit rotation of the second arm 200. Of course, an indicator corresponding to the scale is also provided on one side of the second sleeve 2 for quickly identifying the corresponding rotation angle.

[0042] Furthermore, a slot 12 is provided on the periphery of the first sleeve 1, and a key 342 is provided on the rotating housing 34. The key 342 is mounted in the slot 12, and the slot 12 is used to limit the range of movement of the key 342. The range of the slot 12 matches the maximum measuring range of the scale 4. Through this structure, the key 342, with a certain range of movement, can limit the rotation angle of the rotating housing 34, the second sleeve 2, and the second arm 200, and match the measuring range of the scale 4. This allows the bracket connection device in this embodiment to move within a pre-set range, and allows the operator to intuitively determine the current relative rotation angle of the second arm 200.

[0043] Further, see Figure 1 The bottom of the fixing member 31 has a protruding pin 312, and the top of the first sleeve 1 has a through hole that matches the position of the pin 312. The pin 312 is installed in the through hole to limit the rotation of the fixing member 31 relative to the first sleeve 1. Specifically, in this embodiment, there are multiple pins 312. By inserting the pins 312 into the through holes, the fixing member 31 is first limited relative to the top of the first sleeve 1. Combined with the bolts and other structures on the top of the fixing member 31, it is completely fixed, making the installation of the fixing member 31 easier and meeting the stability requirements.

[0044] The contents disclosed above are only preferred feasible embodiments of the present invention and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the description and drawings of the present invention are included in the scope of the patent application of the present invention.

[0045] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0046] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application. It is intended that the appended embodiments include these modifications and variations without departing from the present application.

Claims

1. A bracket connecting device for connecting a first arm and a second arm of a bracket, characterized in that: The bracket connecting device includes: a first sleeve connected to the rotating end of the first arm; a second sleeve connected to the rotating end of the second arm; A damping device, comprising a fixing member, two damping balls, an elastic member, and a rotating shell, wherein the fixing member has a through groove, the elastic member is mounted in the groove, the two damping balls are mounted at both ends of the elastic member, the fixing member is connected to the first sleeve, the rotating shell is connected to the second sleeve, and the rotating shell is sleeved outside the fixing member so that the two damping balls abut against the inner wall of the rotating shell under the action of the elastic member; The top of the first sleeve is retracted into an annular step, and at least a portion of the second sleeve is sleeved on the annular step of the first sleeve; The inner wall of the rotating shell has a plurality of grooves arranged radially and spaced apart, and the positions of the plurality of grooves match the two damping balls. The plurality of grooves are used to generate regular damping between the second sleeve and the two damping balls when the rotating shell is driven to rotate by the second sleeve.

2. The bracket connection device according to claim 1, characterized in that: There are multiple slots in the fixing member, and the multiple slots do not intersect with each other. Each slot is further provided with two damping balls for resisting the rotating shell, and an elastic member between the two damping balls.

3. The bracket connection device according to claim 2, characterized in that: The number of the slots in the fixing member is two, and the two slots are vertically arranged along the horizontal direction.

4. The bracket connection device according to claim 1, characterized in that: The first sleeve is provided with a scale, and the scale interval of the scale matches the interval between the multiple grooves of the rotating shell.

5. The bracket connection device according to claim 4, characterized in that: A sliding groove is provided on the periphery of the first sleeve, and a key is provided on the rotating shell. The key is installed in the sliding groove, and the sliding groove is used to limit the moving range of the key.

6. The bracket connection device according to claim 5, characterized in that: The range of the slide groove matches the maximum measuring range of the scale.

7. The bracket connection device according to claim 1, characterized in that: The bottom of the fixing member has a protruding pin, and the top of the first sleeve has a through hole that matches the position of the pin. The pin is installed in the through hole, so that the rotation of the fixing member relative to the first sleeve is limited.

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