Camera

Abstract

An embodiment of the utility model discloses a camera, which relates to the technical field of security and protection monitoring equipment, and comprises a ball head assembly, the ball head assembly comprises a spherical support and a front hemisphere, the spherical support comprises a base and a spherical shell, the spherical shell extends upwards from the surface of the base and is provided with an accommodating space, and the spherical shell is provided with an opening extending from the top to the bottom. Clamping jaws which are oppositely arranged on the two sides are arranged in the spherical shell, rotating shafts are arranged on the two sides of the front hemisphere, the front hemisphere is arranged in the spherical shell, the front hemisphere is in interference fit with the clamping jaws of the spherical shell through the rotating shafts of the front hemisphere, and the front hemisphere can rotate in the vertical direction relative to the spherical shell; a mounting hole is formed in the top of the lower shell, and buckles are arranged on the periphery of the mounting hole; the periphery of the base of the spherical support is embedded into the mounting hole and connected to the periphery of the mounting hole through a buckle, and the spherical support can rotate in the horizontal direction relative to the lower shell; and the smoothness of rotation adjustment of the ball head can be improved conveniently.

Description

Technical Field

[0001] This utility model relates to the field of security monitoring equipment technology, and in particular to an explosion-proof camera. Background Technology

[0002] In security cameras, PTZ cameras are widely used in scenarios requiring all-around monitoring. They typically use a ball head to adjust horizontally (P-axis) and vertically (T-axis). However, in existing technology, the ball head rotation mechanism of cameras is generally implemented using a gear and rack structure. Due to poor design of the mating structure, the ball head often gets stuck during rotation, resulting in unsmooth angle rotation and affecting the user experience. Utility Model Content

[0003] In view of this, the present invention provides a walkie-talkie camera with manually adjustable ball head direction, which improves the smoothness of ball head rotation adjustment through optimized structural design.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A camera includes a ball head assembly comprising a spherical bracket and a front hemisphere. The spherical bracket includes a base and a spherical housing extending upward from the surface of the base, the spherical housing having an accommodating space. The spherical housing has an opening extending from the top to the bottom and has opposing claws on both sides. The front hemisphere has pivots on both sides and is disposed within the spherical housing. The front hemisphere is press-fitted with the claws of the spherical housing via the pivots of the front hemisphere, and the front hemisphere is rotatable in the vertical direction relative to the spherical housing.

[0006] The lower shell is a hollow structure, and the top of the lower shell has a mounting hole, and the periphery of the mounting hole is provided with a buckle;

[0007] The circumference of the base of the spherical bracket is embedded in the mounting hole and connected to the circumference of the mounting hole by the buckle, and the spherical bracket is rotatable in the horizontal direction relative to the lower shell.

[0008] Optionally, the claw includes a first support rib and a second support rib with concave arc surface structure formed on the inner wall of the spherical shell, which are arranged opposite to each other. The concave arc surface structure of the first support rib and the concave arc surface structure of the second support rib combine to form an opening groove for accommodating the front hemisphere rotating shaft.

[0009] The outer surface of the front hemisphere pivot is an arc-shaped structure. The front hemisphere pivot is interference-fitted into the opening groove, and the outer surface of the front hemisphere pivot fits into the opening groove.

[0010] Optionally, a limiting protrusion is provided on one side of the front hemisphere, on both sides of the rotating shaft, and a raised reinforcing rib is provided on both sides of the claw on one side of the inner wall of the spherical shell. The shape of the raised reinforcing rib matches the limiting protrusion of the front hemisphere. The limiting protrusion and the raised reinforcing rib form a limiting structure for limiting the rotation range of the front hemisphere in the vertical direction through surface contact.

[0011] Optionally, a mis-proof mounting rib is provided on the inner wall of the spherical shell on the side opposite to the orientation of the limiting protrusion on the front hemisphere.

[0012] Optionally, the first surface of the circumference of the base of the spherical bracket is provided with a plurality of grooves, and a compression elastic element is fitted in the grooves. When the circumference of the base of the spherical bracket is embedded in the mounting hole of the lower shell, the compression elastic element is located between the circumference of the base and the inner wall of the lower shell, and the compression elastic element provides damping when the spherical bracket rotates horizontally relative to the lower shell.

[0013] The circumference of the base of the spherical bracket is clearance-fitted with the circumference of the mounting hole.

[0014] Optionally, the lower shell includes: a top cover and a bottom cover connected to each other, the top cover including a plurality of first ribs extending from the bottom upward inside, and the bottom cover including a sidewall extending toward the top cover and a plurality of second ribs formed in the sidewall;

[0015] The first rib, the second rib, and the side wall of the top cover form an accommodating space;

[0016] A single speaker is located in the accommodating space.

[0017] Optionally, the top of the first rib is provided with an angled guide structure that is inclined towards the accommodating space, and the single speaker is embedded in the accommodating space along the angled guide structure.

[0018] Optionally, the top of the lower housing has two mounting holes;

[0019] The ball head assembly includes two components, with one ball head assembly being installed in each mounting hole by being embedded around the circumference of the base of the spherical bracket.

[0020] The camera provided in this embodiment of the utility model improves its angle adjustment structure by using an interference fit between the shafts on both sides of the front hemisphere and the claws on both sides of the spherical bracket to achieve manual rotation adjustment in the vertical direction. Compared with the adjustment method of the gear and rack transmission structure, the interference fit generates a certain clamping force, which can form a reliable contact. Therefore, it can effectively improve the jamming problem that may occur during the manual adjustment of the ball head angle, thereby improving the smoothness and stability of the rotation during the manual adjustment of the ball head angle. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural cross-sectional view of an embodiment of the camera of this utility model;

[0023] Figure 2 This is an exploded view of the structure of an embodiment of the camera of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of one embodiment of the front hemisphere in this utility model;

[0025] Figure 4 This is a schematic diagram of an embodiment of the spherical bracket in this utility model;

[0026] Figure 5 This is a schematic diagram showing the view of the camera of this utility model with the top shell removed and facing the top cover.

[0027] Figure 6 This is a cross-sectional structural diagram of an embodiment of the camera of this utility model;

[0028] Figure 7 for Figure 6 Enlarged view of the local structure at point A;

[0029] Figure 8 and Figure 9 A schematic diagram of the installation structure of a single speaker is shown. Detailed Implementation

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] It should be understood that the described embodiments are merely one component embodiment of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] The various embodiments of the present invention described below can be examples of applications in video cameras or other video recording devices, and for ease of description, they are collectively referred to as video cameras, and video cameras are used as examples in the description.

[0033] In some cameras that allow manual adjustment of the image shooting angle, the vertical angle adjustment mechanism is generally achieved using a gear and rack transmission structure. However, due to improper gear and rack engagement or excessive friction, the gears and racks often experience jamming during rotation, affecting the user experience of angle adjustment.

[0034] Therefore, this utility model provides a camera that improves the smoothness of manual adjustment by improving the mechanical structure of the ball head assembly for adjustment in the vertical and horizontal directions.

[0035] Next, combined Figures 1 to 7 The camera provided in the embodiments of this utility model will be described in detail.

[0036] like Figures 1 to 3 As shown, in some embodiments, this embodiment provides a camera including a ball head assembly and a lower housing.

[0037] The ball joint assembly includes a spherical bracket 110 and a front hemisphere 120. The spherical bracket 110 includes a base 111 and a spherical shell 112 extending upward from the surface of the base 111. The interior of the spherical shell 112 forms a receiving space 113 for receiving the front hemisphere 120. The spherical shell 112 has an opening 114 extending from the top to the bottom, allowing a portion of the structure of the front hemisphere 120 to be exposed when installed in the receiving space 113; the spherical shell also has two opposing claws 115 arranged inside.

[0038] The front hemisphere 120 has rotating shafts 121 on both sides. The front hemisphere 120 is located in the spherical shell 112. The rotating shafts 121 of the front hemisphere 120 are interference-fitted with the claws 115 of the spherical shell 112. (See figure) Figure 1 In some embodiments, the interference fit between the shaft 121 and the pawl 115 is 0.2 mm; and the front hemisphere 120 is rotatable in the vertical direction (T direction) relative to the spherical housing 112.

[0039] The lower shell 130 is a hollow structure. The top of the lower shell 130 has a mounting hole 131 and a buckle 132 around the mounting hole 131. The circumference of the base 111 of the spherical bracket 110 is embedded in the mounting hole 131 and is connected to the circumference of the mounting hole 131 by the buckle 132, so that the spherical bracket 110 can rotate in the horizontal direction relative to the lower shell 130 to achieve angle adjustment in the horizontal direction.

[0040] The camera provided in this embodiment improves its angle adjustment structure by using an interference fit between the shafts on both sides of the front hemisphere and the claws on both sides of the spherical bracket to achieve manual rotation adjustment in the vertical direction. Compared with the adjustment method of the gear and rack transmission structure, the interference fit generates a certain clamping force, which can form a reliable contact. Therefore, it can effectively avoid the jamming problem that may occur in the traditional gear and rack structure, thus ensuring the smoothness and stability of the engagement during rotation.

[0041] In some embodiments, the claw 115 includes a first support rib 116 and a second support rib 117 with concave arcuate structures formed on the inner wall of the spherical shell. The concave arcuate structures of the first support rib 116 and the second support rib 117 combine to form an opening groove 118 for accommodating the rotating shaft of the front hemisphere 112. Specifically, the claw 115 includes a first support rib 116 and a second support rib 117, which are disposed on opposite sides of the inner wall of the spherical shell 112. The inner surfaces of the first support rib 116 and the second support rib 117 are concave arcuate structures, and the concave arcuate structures on both sides are arranged opposite to each other to form an opening groove 118 for accommodating the rotating shaft 121 of the front hemisphere 120.

[0042] The outer surface of the front hemisphere 120 rotating shaft 121 is an arc surface structure. The front hemisphere 120 rotating shaft 121 is interference-fitted into the opening groove 118, and the outer surface of the front hemisphere rotating shaft 121 is in contact with the opening groove.

[0043] Specifically, the outer surface of the rotating shaft 121 is designed as an arc surface structure that matches the concave arc surface of the opening slot 118. During assembly, the rotating shaft 121 is inserted into the opening slot 118 and an interference fit is achieved. After assembly, the outer surface of the rotating shaft 121 is tightly fitted with the concave arc surface of the opening slot 118, thereby ensuring that the front hemisphere 120 can rotate smoothly in the vertical direction without any jamming during manual adjustment.

[0044] See Figure 1 As shown, in some embodiments, two screws 12 are locked onto the spherical bracket, located directly above the front hemisphere's pivot. The gap between the screw 12 bearing surface and the pivot is 0.1mm, ensuring that during the transportation of the entire machine, after the ball head is impacted, the front hemisphere will not dent or fall off relative to the spherical bracket.

[0045] In this embodiment, by tightly fitting the outer surface of the rotating shaft 121 with the concave arc surface of the opening groove 118 through an interference fit, the T-axis rotation of the front hemisphere 120 is not only stable and reliable, but also has a moderate damping feel, which improves the adjustment feel.

[0046] In some embodiments, limiting protrusions 122 are provided on one side of the front hemisphere 120, on both sides of the pivot 121, see reference. Figure 3As shown, as an optional embodiment, two limiting protrusions 122 are provided on the right outer surface of the front hemisphere 120, and the limiting protrusions 122 are located on both sides of the rotating shaft 121.

[0047] On the inner wall of the spherical shell 112, protruding reinforcing ribs 119 are provided on both sides of the claw 115 located on one side, see reference. Figure 1 As shown, the shape of the raised reinforcing rib 119 matches the limiting protrusion of the front hemisphere, and the limiting protrusion 122 and the raised reinforcing rib 119 form a limiting structure for limiting the rotation range of the front hemisphere in the vertical direction through surface contact.

[0048] See Figure 1 and Figure 3 As an optional embodiment, two raised reinforcing ribs 119 are provided on the right side of the inner wall of the spherical shell 112. The raised reinforcing ribs 119 are located at both ends of the claw 115 and extend upward from the inner wall of the spherical shell. The shape and position of the raised reinforcing ribs 119 correspond to those of the limiting protrusions 122, and are used to generate physical contact when the front hemisphere 120 rotates to a set angle, thereby limiting the rotation range.

[0049] In some embodiments, when the front hemisphere 120 rotates around the pivot 121, the limiting protrusion 122 gradually contacts the reinforcing rib 119 and forms a physical barrier within a rotation range of 10° to 75°. This limiting structure effectively prevents excessive rotation of the front hemisphere 120 while maintaining structural stability and operational reliability.

[0050] See Figure 4 As shown, in some embodiments, in order to prevent the front hemisphere 120 from being installed in the wrong orientation during assembly, the inner wall of the spherical shell 112 is provided with an anti-misalignment rib 123 on the side opposite to the orientation of the limiting protrusion 122 on the front hemisphere 120.

[0051] Continue reading Figure 4 As shown, as an optional embodiment, two "L"-shaped anti-foolproof ribs 123 are provided on the left side of the inner wall of the spherical shell 112, and are located on both sides of the claw 115 respectively.

[0052] When the front hemisphere 120 is assembled to the spherical bracket 110, its pivot 121 must first be aligned with the opening slot 118 of the chuck 115, while the right-side limiting protrusion 122 must avoid the position of the left-side "L"-shaped anti-foolproof rib 123. If the assembly direction is incorrect, the limiting protrusion 122 will interfere with the anti-foolproof rib 123, causing the front hemisphere 120 to fail to be correctly inserted into the opening slot 118, thereby forcing the user to adjust the assembly direction, achieving assembly error prevention, and further improving the convenience and reliability of the assembly process.

[0053] like Figure 5As shown, in some embodiments, the first surface of the circumference of the base 111 of the spherical bracket 110 is provided with a plurality of grooves 124. Preferably, the grooves 124 are distributed at equal intervals along the circumference of the base 111. More preferably, three grooves 124 are distributed at equal intervals along the circumference of the base 111. A compression elastic element 125 is fitted into each groove 124.

[0054] Specifically, the compression elastic element 125 can be made of single-sided adhesive EVA material with a thickness of about 2mm, possessing a certain degree of resilience. During assembly, the compression elastic element 125 is attached to the bottom surface of the groove 124, and after the base 111 of the spherical bracket 110 is inserted into the mounting hole 131 of the lower shell 130, the compression elastic element 125 is in a compressed state with a compression amount of 0.6mm, approximately 30% of the EVA thickness.

[0055] When the circumference of the base 111 of the spherical bracket is embedded in the mounting hole of the lower shell 130, the compression elastic element 125 is located between the circumference of the base 111 and the inner wall of the lower shell 130. The compression elastic element 125 provides damping when the spherical bracket rotates horizontally relative to the lower shell 130. In other words, when the spherical bracket 110 rotates horizontally relative to the lower shell 130, the compression elastic element 125 provides moderate damping through rebound, thereby improving the rotation feel and ensuring that there is no jamming during rotation.

[0056] In some embodiments, the periphery of the base 111 of the spherical bracket 110 and the periphery of the mounting hole 131 of the lower shell 130 are fitted with a clearance.

[0057] During assembly, the outer diameter of the base 111 is slightly smaller than the inner diameter of the mounting hole 131, with a gap of 0.2 mm between them. This gap ensures that the base 111 of the spherical bracket 110 can be smoothly inserted into the mounting hole 131, while providing the necessary free space for horizontal rotation.

[0058] like Figure 2 , Figures 6 to 9 As shown, in some embodiments, the lower housing 130 includes a top cover 133 and a bottom cover 134 connected together.

[0059] The top cover 133 includes a plurality of first ribs 135 extending upward from the bottom inside. Preferably, the first ribs 135 are spaced apart along the sidewall 1331 of the top cover 133. The bottom cover 134 includes a sidewall 136 extending toward the top cover 133 and a plurality of second ribs 137 formed on the sidewall 136. The first ribs 135, the second ribs 137, and the sidewall 1331 of the top cover 133 together enclose an accommodating space.

[0060] The accommodating space is used to accommodate the single speaker 139. An angled guide structure 140 is provided at the top of the first rib 135 to guide the single speaker 139 into the accommodating space along the angled guide structure 140. After assembly, the single speaker 139 is fixed with the first rib 135 and the second rib 137 with zero contact, requiring no additional screws.

[0061] Through the above design, the single speaker 139 can be efficiently installed in the lower housing 130, while avoiding the visible appearance of screw fixing and ensuring the integrity of the overall structure.

[0062] like Figure 9 As shown, in some embodiments, the top of the first rib 135 is provided with an angled guide structure 140 that is inclined toward the accommodating space. In other words, the angled guide structure 140 is located on the top surface of the first rib 135 and is inclined toward the interior direction of the accommodating space, and the outer peripheral edge of the single horn 139 is designed to match the shape of the angled guide structure 140.

[0063] During assembly, the single-unit horn 139 slides into the receiving space along the guide direction of the angled guide structure 140 and fits against the side wall and bottom of the first rib 135 with zero fit (i.e., tolerance is 0). Simultaneously, the metal surface of the single-unit horn 139 remains in contact with the inner wall of the second rib 137. In other words, the single-unit horn 139 is assembled with the mating surfaces of the top cover 133 and the bottom cover 134 through zero fit, similar to... Figure 9 The diagram shows the state of the assembly surfaces at the two locations marked "0", thus achieving screwless fixing. This not only ensures the assembly accuracy of the single speaker 139 but also significantly improves assembly efficiency.

[0064] See Figure 8 Specifically, on the inner wall of the lower shell 130, specifically on the inner wall of the top cover 133, there is an arrow marking indicating the direction of the individual speaker. After the individual speaker 139 is assembled, the direction of the wire output of the individual speaker 139 is clearly indicated by the arrow marking on the lower shell 130, avoiding problems such as incorrect installation or improper wiring direction.

[0065] like Figure 2 and Figure 5 As shown, in some embodiments, the top of the lower housing 130 is provided with two mounting holes 131 for mounting two ball joint assemblies.

[0066] Each mounting hole 131 is provided with a snap fastener 132 around its perimeter for connection with the base 111 of the spherical bracket 110. The ball head assembly includes two spherical brackets 110 and two front hemispheres 120, with each ball head assembly being embedded in its corresponding mounting hole 131.

[0067] During assembly, the base 111 of the ball joint bracket 110 is inserted into the mounting hole 131, and the circumference of the base 111 is connected to the circumference of the mounting hole 131 by a snap fastener 132, forming a stable assembly relationship. The two ball joint assemblies are symmetrically arranged on the top of the lower housing 130, allowing the camera to monitor from two directions simultaneously.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A camera, characterized in that, include: A ball joint assembly includes a spherical support and a front hemisphere. The spherical support includes a base and a spherical shell extending upward from the surface of the base, forming a receiving space. The spherical shell has an opening extending from the top to the bottom and has claws arranged on opposite sides inside the spherical shell. The front hemisphere has pivots on both sides and is disposed in the spherical shell. The front hemisphere is press-fitted with the claws of the spherical shell through the pivots of the front hemisphere, and the front hemisphere is rotatable in the vertical direction relative to the spherical shell. The lower shell is a hollow structure, and the top of the lower shell has a mounting hole, and the periphery of the mounting hole is provided with a buckle; The circumference of the base of the spherical bracket is embedded in the mounting hole and connected to the circumference of the mounting hole by the buckle, and the spherical bracket is rotatable in the horizontal direction relative to the lower shell.

2. The camera according to claim 1, characterized in that, The claw includes a first support rib and a second support rib with concave arc surface structure formed on the inner wall of the spherical shell. The concave arc surface structure of the first support rib and the concave arc surface structure of the second support rib are combined to form an opening groove for accommodating the front hemisphere rotating shaft. The outer surface of the front hemisphere pivot is an arc-shaped structure. The front hemisphere pivot is interference-fitted into the opening groove, and the outer surface of the front hemisphere pivot fits into the opening groove.

3. The camera according to claim 1, characterized in that, On one side of the front hemisphere, on both sides of the pivot, there are limiting protrusions. On the inner wall of the spherical shell, on both sides of the claw on one side, there are raised reinforcing ribs. The shape of the raised reinforcing ribs matches the limiting protrusions of the front hemisphere. The limiting protrusions and the raised reinforcing ribs form a limiting structure for limiting the rotation range of the front hemisphere in the vertical direction through surface contact.

4. The camera according to claim 3, characterized in that, On the inner wall of the spherical shell, on the side opposite in orientation to the limiting protrusion on the front hemisphere, there is an anti-foolproof rib.

5. The camera according to claim 1, characterized in that, The first surface of the circumference of the base of the spherical bracket is provided with a plurality of grooves, and a compression elastic element is fitted in the grooves. When the circumference of the base of the spherical bracket is embedded in the mounting hole of the lower shell, the compression elastic element is located between the circumference of the base and the inner wall of the lower shell. The compression elastic element provides damping when the spherical bracket rotates horizontally relative to the lower shell.

6. The camera according to claim 1, characterized in that, The circumference of the base of the spherical bracket is clearance-fitted with the circumference of the mounting hole.

7. The camera according to claim 1, characterized in that, The lower shell includes a top cover and a bottom cover connected to each other. The top cover includes a plurality of first ribs extending from the bottom upward inside. The bottom cover includes a sidewall extending toward the top cover and a plurality of second ribs formed in the sidewall. The first rib, the second rib, and the side wall of the top cover form an accommodating space; A single speaker is located in the accommodating space.

8. The camera according to claim 7, characterized in that, The top of the first rib is provided with an angled guide structure that is inclined toward the accommodating space, and the single speaker is embedded in the accommodating space along the angled guide structure.

9. The camera according to claim 1, characterized in that, The top of the lower shell has two mounting holes; The ball head assembly includes two components, with one ball head assembly being installed in each mounting hole by being embedded around the circumference of the base of the spherical bracket.

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