Doll ball joints and doll skeleton

Abstract

The present invention discloses a doll spherical joint, comprising a base, at least one joint socket arranged in the base, a ball head, a pressure plate and an elastic body; the joint socket and the elastic body are arranged in the base cavity, the joint socket is provided with an inner spherical surface adapted to the spherical surface of the ball head, the depth of the inner spherical surface is less than the radius of the ball head, and the ball head is adaptively connected to the inner spherical surface; a pressure plate through hole is provided on the pressure plate, the diameter of the pressure plate through hole is less than the diameter of the ball head, so as to form a first spacing between the pressure plate and the joint socket. The present invention also discloses a doll skeleton, comprising a joint and a spine, and the joint and the spine are composed of the doll spherical joint. Compared with the prior art, the simulation degree of the doll is improved, the wear problem between the ball head and the inner spherical surface that cannot be avoided in long-term use is overcome, and the ball head and the inner spherical surface always maintain zero clearance.

Description

Technical Field

[0001] The invention relates to a doll, in particular to a doll spherical joint and a doll skeleton. Background Art

[0002] Currently, real dolls are loved by many consumers. In order to restore the joint effect of real human body, the skeleton of real dolls (dolls) is often made of Figure 7 The articulation method shown is used as the joints and spine of the puppet skeleton. This structure has the following shortcomings: 1. The range of motion is insufficient, and only one-way rotation can be achieved; 2. The articulation parts are severely worn after multiple rotations and frictions, resulting in loose joints, which cannot be repaired; 3. The friction between the articulation parts is uncontrollable. In order to maintain the posture of the corresponding limbs, the articulation parts will be tightened very tightly during assembly, resulting in the final consumer having to use a lot of force to rotate the joints. Due to the many problems with the articulation method, the final product cannot well imitate the joint effect of the real human body. Summary of the invention

[0003] The purpose of the present invention is to provide a doll spherical joint and a doll skeleton, and the technical problem to be solved is to improve the simulation degree and the wear resistance of the joint.

[0004] To solve the above problems, the present invention adopts the following technical solutions: a doll spherical joint, comprising a base, at least one joint socket arranged in the base, a ball head, a pressure plate and an elastic body; the number of the ball head and the pressure plate is equal to the number of the joint socket; a base cavity is provided in the base, the joint socket and the elastic body are arranged in the base cavity, the joint socket can move linearly along the axial direction of the base cavity, an inner spherical surface adapted to the spherical surface of the ball head is provided on a side of the joint socket away from the elastic body, the depth of the inner spherical surface is less than the radius of the ball head, and the ball head is adaptively connected to the inner spherical surface; when the joint socket is subjected to external force, the elastic body is compressed and deformed, and when the joint socket loses the external force, the elastic body is reset and pushes the joint socket to reset together; a pressure plate through hole is provided on the pressure plate, the diameter of the pressure plate through hole is smaller than the diameter of the ball head, so as to form a first distance between the pressure plate and the joint socket; the pressure plate is fixed to one end of the base located at the joint socket, so that the ball head is limited to the joint socket.

[0005] A ball head guide groove connected to the pressure plate through hole is provided on the pressure plate, a first notch connected to the inner spherical surface is provided on the edge of the joint socket, a second notch is provided on the edge of one end of the base located at the joint socket, the second notch is connected to the base cavity, and the first notch and the second notch are opposite to the ball head guide groove.

[0006] A ball head linear groove is provided on the pressure plate, which passes through the opposite two ends of the pressure plate and is connected to the through hole of the pressure plate to divide the pressure plate into two halves. First notches connected to the inner spherical surface are respectively provided on the opposite two end edges of the joint socket, and second notches are respectively provided on the opposite edges of one end of the base located at the joint socket. The second notch is connected to the base cavity, and the first notch and the second notch are opposite to the ball head guide groove.

[0007] A fossa limiting groove is arranged on the cavity wall of the base cavity, the fossa limiting groove extends along the axial direction of the base cavity, and a limiting convex strip matched with the fossa limiting groove is arranged on the outer wall of the fossa.

[0008] Furthermore, the elastic body is a compression spring.

[0009] Furthermore, an elastic body limiting column is provided on the end of the joint socket opposite to the elastic body, the elastic body is sleeved on the elastic body limiting column, and a second distance is provided between the elastic body limiting column and the bottom of the base cavity.

[0010] Furthermore, two joint sockets are provided, the base cavity has two openings so that the base cavity forms a through cavity, the two joint sockets are respectively provided in opposite ends of the base cavity, and the elastic body is provided between the two joint sockets.

[0011] Furthermore, an elastic body limiting column is provided on the end of the joint socket opposite to the elastic body, the elastic body is sleeved on the two elastic body limiting columns, and a second distance is provided between the two elastic body limiting columns.

[0012] The invention also discloses a puppet skeleton, comprising joints and a spine, wherein the joints and the spine are formed by the puppet spherical joints.

[0013] Compared with the prior art, the present invention realizes multi-directional rotation to imitate the rotation of joints and spine by arranging an elastic body, a joint socket, a ball head and a pressure plate in a base. The elastic body can easily realize rotation under force, and after the rotation is completed, the elastic body can squeeze the joint socket and the ball head against each other and provide sufficient friction force, so that the joint or spine maintains the posture after the rotation to meet the use requirements. Due to the use of spherical joints, the simulation degree of the doll is improved. The elastomer has a certain amount of compression during use. As the ball head and the inner spherical surface wear, the elastomer can support the joint socket so that the inner spherical surface contacts the ball head, thereby overcoming the inevitable wear problem between the ball head and the inner spherical surface in long-term use, so that the ball head and the inner spherical surface always maintain zero gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1-1 It is a schematic structural diagram of the doll spherical joint of Example 1 of the present invention.

[0015] Figure 1-2It is a schematic diagram of the external structure of the doll spherical joint of Example 1 of the present invention.

[0016] Figure 1-3 It is a schematic diagram of the exploded view of the ball joint of the doll according to the first embodiment of the present invention.

[0017] Figure 1-4 It is a cross-sectional view of the ball joint of the doll according to Example 1 of the present invention.

[0018] Figure 2-1 It is a schematic structural diagram of a doll spherical joint according to Example 2 of the present invention.

[0019] Figure 2-2 It is a schematic diagram of the external structure of the doll spherical joint of Example 2 of the present invention.

[0020] Figure 2-3 It is a schematic diagram of the exploded view of the ball joint of the doll according to the second embodiment of the present invention.

[0021] Figure 2-4 It is a cross-sectional view of a ball joint of a doll according to Example 2 of the present invention.

[0022] Figure 3-1 It is a schematic structural diagram of the doll spherical joint of Example 3 of the present invention.

[0023] Figure 3-2 It is a schematic diagram of the external structure of the doll spherical joint of Example 3 of the present invention.

[0024] Figure 3-3 It is a schematic diagram of the exploded view of the ball joint of the doll according to the third embodiment of the present invention.

[0025] Figure 3-4 It is a cross-sectional view of a ball joint of a doll according to Example 3 of the present invention.

[0026] Figure 4-1 It is a schematic structural diagram of a doll spherical joint according to Example 4 of the present invention.

[0027] Figure 4-2 It is a schematic diagram of the external structure of the doll spherical joint of Example 4 of the present invention.

[0028] Figure 4-3 It is a schematic diagram of the exploded view of the ball joint of the doll according to the fourth embodiment of the present invention.

[0029] Figure 4-4 It is a cross-sectional view of a doll ball joint according to Example 4 of the present invention.

[0030] Figure 5-1 It is a schematic structural diagram of the doll spherical joint according to Example 5 of the present invention.

[0031] Figure 5-2It is a schematic diagram of the external structure of the doll spherical joint of Example 5 of the present invention.

[0032] Figure 5-3 It is a schematic diagram of the exploded view of the ball joint of the doll according to Example 5 of the present invention.

[0033] Figure 5-4 It is a cross-sectional view of a ball joint of a doll according to Example 5 of the present invention.

[0034] Figure 6 It is a structural schematic diagram of the puppet skeleton of the present invention.

[0035] Figure 7 It is a structural schematic diagram of the prior art.

[0036] Figure 8 It is a schematic diagram of the structure of the base of the present invention having an extended section. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0038] Embodiment 1:

[0039] like Figure 1-1 , Figure 1-2 , Figure 1-3 and Figure 1-4 1 is a schematic diagram of the structure of the first doll ball joint of the present invention, which can be used as a basic structure of a joint in a doll skeleton and a spine, and comprises a base 1, at least one joint socket 2 arranged in the base 1, a ball head 3, a pressure plate 4 and an elastic body 5; in the present invention, the number of the ball heads 3 and the pressure plates 4 is equal to the number of the joint sockets 2; in this structure, the base 1 has a base cavity 11, the base cavity 11 penetrates one end surface of the base 1 to form an opening, the elastic body 5 is placed in the base cavity 11, one end of the elastic body 5 contacts the bottom of the base cavity 11, the joint socket 2 is placed at one end of the base cavity 11 located at the opening, and the joint socket 2 can move linearly along the axis direction of the base cavity 11. The joint socket 2 is movable, and an inner spherical surface 21 matched with the spherical surface of the ball head 3 is provided on the side of the joint socket 2 facing away from the elastomer 5. The depth of the inner spherical surface 21 is less than the radius of the ball head 3, and the ball head 3 is matched and connected with the inner spherical surface 21; a pressing plate through hole 41 is provided on the pressing plate 4, and the diameter of the pressing plate through hole 41 is smaller than the diameter of the ball head 3. The ball head 3 is limited by the pressing plate 4, thereby forming a first spacing 26 between the pressing plate 4 and the joint socket 2. The first spacing 26 is used to overcome the wear problem between the ball head 3 and the inner spherical surface 21, and the first spacing 26 is 0.2-0.5mm; the pressing plate 4 is fixed to the open end of the base 1 located at the joint socket 2, so that the ball head 3 is limited on the joint socket 2 and cannot be separated, and part of the ball of the ball head 3 is exposed from the pressing plate through hole 41.

[0040] When the ball head 3 is rotated, the joint socket 2 is moved toward the elastomer 5 by the external force, causing the elastomer 5 to be compressed and deformed, and the activity space of the ball 3 is increased, so that it can rotate in any direction; after the joint socket 2 loses the external force, the elastomer 5 is restored and pushes the joint socket 2 to be restored together, and the ball head 3 cannot be rotated due to the tight pressure of the joint socket and the pressure plate 4, thereby achieving the positioning of the ball head 3.

[0041] like Figure 1-1 , Figure 1-2 , Figure 1-3 and Figure 1-4 As shown, a connecting column 31 for connection is provided on the part of the ball head 3 exposed outside the through hole 41 of the pressure plate to meet the connection with other components.

[0042] like Figure 1-2 As shown, the base 1 in the present invention is in the shape of a cylinder, the base cavity 11 extends along the axial direction of the base 1, and the pressure plate 4 is in the shape of a circular sheet. Specifically, a peripheral boss 12 is provided on the outer wall of the open end of the base 1, and the pressure plate 4 has a diameter equal to that of the boss 12 and is fastened to the boss 12 by screws; a thread is provided on the outer wall of the base 1 or an extension section 15 ( Figure 8 to achieve connection with other components.

[0043] like Figure 1-3 As shown, the joint socket 2 has a cylindrical shape, and its length is smaller than the length of the base cavity 11 .

[0044] like Figure 1-3 and Figure 1-4 As shown, a fossa limiting groove 13 is provided on the cavity wall of the base cavity 11, and the fossa limiting groove 13 extends along the axial direction of the base cavity 11, and a limiting ridge 23 matched with the fossa limiting groove 13 is provided on the outer wall of the fossa 2, so that the fossa 2 is restricted from moving along the axial direction of the base cavity 11; specifically, there are multiple fossa limiting grooves 13, which are arranged around the cavity wall of the base cavity 11, and accordingly, the number of the limiting ridges 23 is equal to the number of the fossa limiting grooves 13, and are distributed around the outer wall of the fossa 2.

[0045] like Figure 1-3 and Figure 1-4 As shown, the elastomer 5 is preferably a compression spring. In order to ensure that the elastomer 5 is firmly restricted in the base cavity 11, an elastomer limiting column 24 is provided on the end of the joint socket 2 opposite to the elastomer 5. The elastomer 5 is sleeved on the elastomer limiting column 24. A second distance 25 is provided between the elastomer limiting column 24 and the bottom of the base cavity 11, providing the joint socket 2 with sufficient moving space to enable the ball head 3 to rotate in the inner spherical surface 21.

[0046] Embodiment 2:

[0047] like Figure 2-1 , Figure 2-2 , Figure 2-3 and Figure 2-4 As shown, it is a structural schematic diagram of the second doll ball joint in the present invention. On the basis of Example 1, the number of the joint socket 2 ball head 3 and the pressure plate 4 is set to two, the base cavity 11 has two openings, so that the base cavity 11 forms a through cavity, the two joint sockets 2 are respectively arranged in the openings at the opposite ends of the base cavity 11, and the elastomer 5 is arranged between the two joint sockets 2. Specifically, when the elastomer 5 is preferably a compression spring, there is a second spacing 25 between the two elastomer limit columns 24.

[0048] The doll ball joints of the second embodiment can be used as a spine. Specifically, multiple doll ball joints are connected to each other to imitate the spine-related movements of the human body.

[0049] like Figure 2-1 As shown, when embodiment 2 is combined with one or more embodiments 1, it can be used as a shoulder joint and a hip joint, thereby simulating the related movements of the shoulder joint and the hip joint of the human body.

[0050] Embodiment 3:

[0051] like Figure 3-1 , Figure 3-2 , Figure 3-3 and Figure 3-4 As shown, it is a schematic structural diagram of the third doll spherical joint of the present invention. The third doll spherical joint is a deformation based on Example 2. A ball head guide groove 42 connected to the pressure plate through hole 41 is provided on the two pressure plates 4, and a first notch 22 connected to the inner spherical surface 21 is provided on the edges of the two joint sockets 2. A second notch 14 is provided on the open edges at both ends of the base 1. The second notch 14 is connected to the base cavity 11, and the first notch 22 and the second notch 14 are opposite to the ball head guide groove 42; specifically, the width of the ball head guide groove 42, the first notch 22, and the second notch 14 is slightly larger than the diameter of the connecting column 31, the thickness of the pressure plate 4 is larger than the radius of the ball head 3, the hole wall of the pressure plate through hole 41 is adapted to the outer surface of the ball head 3 to form an arc wall, and the second notch 14 is an arc groove, and the second notch 14 is formed on the boss 12.

[0052] like Figure 3-1 As shown, the two ball head guide grooves 42 are arranged on the same side, so that the connecting posts 31 on the two ball heads 3 can be rotated toward the same side to be parallel to each other.

[0053] The above-mentioned embodiment 3 can be used as a knee joint and an elbow joint, thereby being able to imitate the bending of the knee joint and the elbow joint.

[0054] Embodiment 4:

[0055] like Figure 4-1, Figure 4-2 , Figure 4-3 and Figure 4-4 As shown, it is a structural schematic diagram of the fourth doll spherical joint of the present invention. The fourth doll spherical joint is a deformation based on the embodiment 1. A ball head linear groove 43 that passes through the opposite ends of the pressing plate 4 and is connected to the pressing plate through hole 41 is provided on the pressing plate 4 to divide the pressing plate 4 into two halves. First notches 22 connected to the inner spherical surface 21 are respectively provided on the opposite end edges of the joint socket 2, and second notches 14 are respectively provided on the opposite end edges of the base 1 located at one end of the joint socket 2. The second notch 14 is connected to the base cavity 11. The first notch 22 and the second notch 14 are opposite to the ball head guide groove 42. The widths of the ball head linear groove 43, the first notch 22, and the second notch 14 are slightly larger than the diameter of the connecting column 31. Specifically, the thickness of the pressing plate 4 is slightly smaller than the radius of the sphere of the ball head 3. The second notch 14 is an arc groove, and the second notch 14 is formed on the boss 12.

[0056] The above-mentioned embodiment 4 can be used as a wrist joint, thereby simulating the rotation and bending of the wrist joint.

[0057] Embodiment 5:

[0058] like Figure 5-1 , Figure 5-2 , Figure 5-3 and Figure 5-4 As shown, it is a structural schematic diagram of the fifth doll spherical joint of the present invention. The fifth doll spherical joint is a deformation based on Example 1. A ball head guide groove 42 connected to the pressure plate through hole 41 is provided on the pressure plate 4, a first notch 22 connected to the inner spherical surface 21 is provided on the edge of the joint socket 2, and a second notch 14 is provided on the edge of one end of the base 1 located at the joint socket 2. The second notch 14 is connected to the base cavity 11, and the first notch 22 and the second notch 14 are opposite to the ball head guide groove 42; the widths of the ball head guide groove 42, the first notch 22, and the second notch 14 are slightly larger than the diameter of the connecting column 31. Specifically, the second notch 14 is an arc groove, and the second notch 14 is formed on the boss 12.

[0059] The above-mentioned embodiment 5 can be used as an ankle joint, thereby simulating the rotation and bending of the ankle joint.

[0060] like Figure 6As shown, the present invention further discloses a puppet skeleton, the skeleton 100 comprises joints 200 and a spine 300, wherein the joints 200 comprise shoulder joints 201, elbow joints 202, wrist joints 203, hip joints 204, knee joints 205 and ankle joints 206, the shoulder joints 201, elbow joints 202 and wrist joints 203 are respectively connected via a first straight tube 400, the spine 300 is connected to the hip joint 204 via a Y-shaped bracket 401, the hip joint 204, knee joints 205 and ankle joints 206 are respectively connected via a second straight tube 402, the ankle joint 206 is connected to the sole 403, and only the lumbar vertebrae of the spine 300 adopt the puppet ball joint described in the present invention, and the rest of the spine is straight tubes.

[0061] For ease of understanding, the five types of puppet ball joints in Examples 1 to 5 are distinguished by letters AE, wherein Example 1 is puppet ball joint A501, Example 2 is puppet ball joint B502, Example 3 is puppet ball joint C503, Example 4 is puppet ball joint D504, and Example 5 is puppet ball joint E505.

[0062] like Figure 6 As shown, as a preferred embodiment of the puppet skeleton in the present invention, the shoulder joint 201 is composed of a combination of a puppet spherical joint A501 and a puppet spherical joint B502, and the clavicle and cervical vertebrae in the skeleton are composed of a cross bracket 405. Specifically, the base 1 of the puppet spherical joint A501 in the shoulder joint 201 is connected to the support rod 4051 as the clavicle in the cross bracket 405 by threaded connection or welding, and the puppet spherical joint A501 is connected to the puppet spherical joint B502 by connecting the connecting column 31 of the puppet spherical joint A501 to one of the connecting columns 31 on the puppet spherical joint B502, and then the other connecting column 31 of the puppet spherical joint B502 is connected to the first straight pipe A4001 by threaded connection or welding.

[0063] The elbow joint 202 is composed of a doll spherical joint C503. Specifically, a connecting column 31 at one end of the doll spherical joint C503 is connected to one end of the first straight pipe A4001 by threading or welding, and a connecting column 31 at the other end of the doll spherical joint C503 is connected to one end of the first straight pipe B4002 by threading or welding.

[0064] The wrist joint 203 is composed of a doll ball joint D504. Specifically, the base 1 of the doll ball joint D504 is connected to the other end of the first straight pipe B4002 by thread connection or welding, and the connecting column 31 of the doll ball joint D504 is connected to the palm.

[0065] The hip joint 204 is composed of a combination of a doll ball joint A501 and a doll ball joint B502. Specifically, the base 1 of the doll ball joint A501 is connected to the U-shaped branch 4011 of the Y-shaped bracket 401 by threaded connection or welding, the connecting column 31 of the doll ball joint A501 is connected to the connecting column 31 at one end of the doll ball joint B502, and the connecting column 31 at the other end of the doll ball joint B502 is connected to one end of the second straight pipe A4021;

[0066] The knee joint 205 is composed of a doll ball joint C503. Specifically, a connecting column 31 at one end of the doll ball joint C503 is connected to the other end of the second straight pipe A4021 by threaded connection or welding, and a connecting column 31 at the other end of the doll ball joint C503 is connected to one end of the second straight pipe B4022 by threaded connection.

[0067] The ankle joint 206 is composed of a doll ball joint E505. Specifically, the connecting column 31 of the doll ball joint E505 is connected to the other end of the second straight pipe B4022 by a threaded connection, and the base 1 of the doll ball joint E505 is connected and fixed to the sole of the foot.

[0068] The lumbar vertebrae in the spine are composed of two puppet spherical joints A501 and multiple puppet spherical joints B502 connected to each other. Specifically, there are two puppet spherical joints B502, which are connected to each other through two opposite connecting columns 31. The bases 1 of the two puppet spherical joints A501 at both ends are respectively connected and fixed to the vertical rod 4052 at the lower end of the cross bracket 405 and the vertical rod 4012 of the Y-shaped bracket 401, and the connecting columns 31 of the two puppet spherical joints A501 are respectively connected to the connecting columns 31 opposite to them in the two puppet spherical joints B502.

[0069] The puppet skeleton is formed by combining the above-mentioned various embodiments.

[0070] In the present invention, when there is no external force to pull the ball head 3, there is a zero gap between the inner spherical surface 21 of the joint socket 2 and the hole wall of the pressure plate through hole 41 of the pressure plate 4 and the outer spherical surface of the ball head 3. At the same time, under the support of the elastic force of the elastic body 5, a sufficiently large friction force is formed between the inner spherical surface and the outer spherical surface, so that the upper and lower bones of the joint can overcome the droop or torsion caused by gravity, thereby maintaining the corresponding posture; and when a sufficiently large external force pulls the ball head 3, the joint socket 2 is relatively displaced in the base cavity 11, and a gap is formed between the ball head 3 and the hole wall of the pressure plate through hole 41, so that the ball head 3 can rotate. After the external force disappears, under the action of the elastic force of the elastic body 5, the joint socket 2 will quickly reset, so that the joint and bones maintain the posture after being pulled.

[0071] The present invention specifically has the following advantages:

[0072] The spherical structure is adopted to realize the universal rotation of the joint, which greatly improves the simulation degree;

[0073] The rebound force of the spring is used to support the close combination of the ball head and the concave surface, thereby providing sufficient and appropriate friction resistance, so that the corresponding limb can not only maintain the posture but also twist easily.

[0074] The spring has a certain amount of compression during use. As the ball head and the inner spherical surface wear, a gap will appear between the ball head and the inner spherical surface. Since the spring is a compression spring, it can always exert force on the joint socket, allowing the inner spherical surface to contact the ball head, thereby overcoming the inevitable wear problem between the ball and the inner spherical surface in long-term use, so that the ball head and the inner spherical surface always maintain a zero-gap combination.

[0075] The tightness of the joint is adjusted by adjusting parameters such as the strength of the spring, thereby obtaining quantitative data on the tightness and achieving quantitative standards in the manufacturing process.

Claims

1. A doll ball joint, characterized in that: The invention comprises a base (1), at least one joint socket (2) arranged in the base (1), a ball head (3), a pressure plate (4) and an elastic body (5); the number of the ball heads (3) and the pressure plates (4) is equal to the number of the joint sockets (2); the base (1) has a base cavity (11), the joint socket (2) and the elastic body (5) are arranged in the base cavity (11), the joint socket (2) can move linearly along the axial direction of the base cavity (11), and the joint socket (2) moves away from the elastic body (5) ) is provided on one side with an inner spherical surface (21) adapted to the spherical surface of the ball head (3), the depth of the inner spherical surface (21) being less than the radius of the ball head (3), and the ball head (3) is adapted to be connected with the inner spherical surface (21); when the joint socket (2) is subjected to an external force, the elastic body (5) is compressed and deformed, and when the joint socket (2) loses the external force, the elastic body (5) is reset and pushes the joint socket (2) to reset together; a pressing plate through hole (41) is provided on the pressing plate (4), and the diameter of the pressing plate through hole (41) is less than The diameter of the ball head (3) is such that a first spacing (26) is formed between the pressure plate (4) and the joint socket (2); the pressure plate (4) is fixed to one end of the base (1) located at the joint socket (2) so that the ball head (3) is limited on the joint socket (2); a joint socket limiting groove (13) is provided on the cavity wall of the base cavity (11), the joint socket limiting groove (13) extending along the axial direction of the base cavity (11), and a groove corresponding to the joint socket limiting groove (13) is provided on the outer wall of the joint socket (2). an adapted limiting convex strip (23); a ball head guide groove (42) communicating with the pressure plate through hole (41) is provided on the pressure plate (4); a first notch (22) communicating with the inner spherical surface (21) is provided on the edge of the joint socket (2); a second notch (14) is provided on the edge of one end of the base (1) located at the joint socket (2); the second notch (14) is communicated with the base cavity (11); the first notch (22) and the second notch (14) are opposite to the ball head guide groove (42).

2. The doll ball joint according to claim 1, characterized in that: A ball head linear through groove (43) is provided on the pressure plate (4) and passes through opposite ends of the pressure plate (4) and is connected to the pressure plate through hole (41) so as to divide the pressure plate (4) into two halves. First notches (22) connected to the inner spherical surface (21) are provided on opposite ends of the joint socket (2). Second notches (14) are provided on opposite edges of the base (1) at one end of the joint socket (2). The second notches (14) are connected to the base cavity (11). The first notch (22) and the second notch (14) are opposite to the ball head guide groove (42).

3. The doll ball joint according to claim 1, characterized in that: The elastic body (5) is a compression spring.

4. The doll ball joint according to claim 3, characterized in that: An elastic body limiting column (24) is provided on one end of the joint socket (2) opposite to the elastic body (5), the elastic body (5) is sleeved on the elastic body limiting column (24), and a second distance (25) is provided between the elastic body limiting column (24) and the bottom of the base cavity (11).

5. The doll ball joint according to any one of claims 1 to 4, characterized in that: Two joint sockets (2) are provided, and the base cavity (11) has two openings so that the base cavity (11) forms a through cavity. The two joint sockets (2) are respectively arranged in opposite ends of the base cavity (11), and the elastic body (5) is arranged between the two joint sockets (2).

6. The doll ball joint according to claim 5, characterized in that: An elastic body limiting column (24) is provided on one end of the joint socket (2) opposite to the elastic body (5); the elastic body (5) is sleeved on the two elastic body limiting columns (24); and a second spacing (25) is provided between the two elastic body limiting columns (24).

7. A puppet skeleton, comprising joints and a spine, characterized in that: The joints and spine are composed of the doll spherical joints described in any one of claims 1-6.

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