CN215876232U - Head-raising mouth-opening mechanism of animal toy - Google Patents

Abstract

The utility model provides a head-raising mouth-opening mechanism of an animal toy, which comprises a head model and a frame, wherein the head model consists of a head shell and a lower jaw; wherein the head shell (1) is arranged on the frame by a first pivot (2) directly or through a side link (21), and is connected with a reciprocating mechanism on the frame at the position before or after the first pivot to form a rod mechanism taking the head shell as a rocker; the lower jaw (17) is arranged on the head shell by a pivot III (16), and is connected with the frame or the reciprocating mechanism by a connecting rod (14) at the position in front of the pivot III or a transmission rocker at the position behind the pivot III to form a rod mechanism taking the lower jaw as a rocker. Compared with the prior art, the swing center of the lower jaw is determined by the third pivot, the third pivot can be arranged at the relative position with the animal body according to the characteristics of different animals without being limited by the arrangement on the body shell in the prior art, so that the structure is simple, and the transmission performance is stable. The simple structure also saves the manufacturing cost of the toy.

Description

Head-raising mouth-opening mechanism of animal toy

Technical Field

The utility model relates to a head-raising and mouth-opening mechanism of an animal toy, which is a mechanism for enabling the head of the animal toy to have pitching motion and the mouth of the animal toy to have she opening motion.

Background

The Chinese utility model patent ZL201120011868.3 'mouth opening and closing mechanism of animal toy' introduces a head raising and mouth opening mechanism of animal toy, which comprises a toy shell, a motor, a variable speed transmission mechanism, a mouth opening and closing driving piece connected with the variable speed transmission mechanism, wherein the shell consists of a trunk shell, a head shell containing a palate and a chin; the head shell and the chin are hinged with the body shell through pivots in the left-right direction, the head shell and the chin are connected through gears taking the respective pivots as centers, and the opening and closing driving piece is further connected with the head shell or the chin. However, the head-up opening and closing mechanism has a problem that since the head shell and the chin are hinged with the body shell respectively, the swinging centers of the head shell and the chin are positioned on the body shell, namely the center point of the opening and closing of the toy mouth is on the body to make the toy mouth rigid. Meanwhile, the two parts are mutually driven by gears to open and close, and gear shaft frames are required to be arranged on the neck or the machine body to install the gears for matching, so the structure is complex and bulky, and the application has great limitation.

Disclosure of Invention

In view of the above-mentioned disadvantages, the present invention provides a head-up mouth-opening mechanism for an animal toy, in which a swing center point of a chin is not fixed with respect to a trunk housing and a swing thereof is driven by a lever mechanism when a head-up mouth-opening operation is performed.

The utility model provides a head-raising mouth-opening mechanism of an animal toy, which comprises a head model and a frame, wherein the head model consists of a head shell and a lower jaw; the head shell is arranged on the frame by a pivot I arranged in the left-right direction directly or through a side link and is connected with a reciprocating mechanism arranged on the frame at the position in front of or behind the pivot I to form a rod mechanism taking the head shell as a rocker; the lower jaw is arranged on the head shell through a third pivot shaft arranged in the left-right direction, and is arranged on the rack through a connecting rod in front of the third pivot shaft or is arranged on the rack through a reciprocating mechanism to form a rod mechanism taking the lower jaw as a rocker.

The utility model provides a head-raising mouth-opening mechanism of an animal toy.A head shell is respectively connected with a rack in front of or behind a pivot I and the pivot I and is connected with the rack through a reciprocating mechanism, so that a fixed distance is reserved between one point of the pivot I and the point of the pivot I or behind the pivot I which are arranged on the head shell and the rack, and the other point of the pivot I and the point of the pivot I which are arranged on the head shell changes the distance between the other point of the pivot I and the rack along with the reciprocating mechanism, thereby enabling the head shell to become a rocker which swings along with the pivot I; the lower jaw is respectively connected with the head shell and the frame or the reciprocating mechanism by a third pivot and a position in front of the third pivot, when the head shell swings according to the first pivot, different points on the head shell except the point where the first pivot is located are displaced with different amplitudes relative to the frame, so that two points on the lower jaw where the third pivot is arranged and the position in front of the third pivot have different moving tracks relative to the first pivot, and the lower jaw becomes a rocker swinging according to the third pivot. Compared with the prior art, the utility model drives the head shell to swing by the reciprocating mechanism to present the head pitching motion, and drives the mandible to swing by the head shell to present the she movement of the mouth. The swing center of the lower jaw is determined by the third pivot, the third pivot can be arranged at the relative position with the animal body according to the characteristics of different animals without being limited by the arrangement on the body shell in the prior art, and the swing of the lower jaw is pried by the swing of the head shell instead of the half-tooth transmission, so that the structure is simple and the transmission performance is stable. The simple structure also saves the manufacturing cost of the toy.

The utility model provides a head-raising mouth-opening mechanism of an animal toy, which comprises a head model and a frame, wherein the head model consists of a head shell and a lower jaw; the head shell is arranged on the frame by a pivot I arranged in the left-right direction directly or through a side link and is connected with a reciprocating mechanism arranged on the frame at the position in front of or behind the pivot I to form a rod mechanism taking the head shell as a rocker; the lower jaw is arranged on the head shell by a third pivot shaft arranged in the left-right direction, the position behind the third pivot shaft on the lower jaw is connected with the rack or the reciprocating mechanism by a transmission rocker, and the transmission rocker is arranged on the head shell by a fifth pivot shaft to form a rod mechanism taking the lower jaw as a rocker.

The utility model provides a head-raising mouth-opening mechanism of an animal toy.A head shell is respectively connected with a rack by a first pivot and a first pivot in front of or behind and is connected with the rack by a reciprocating mechanism, so that a fixed distance is reserved between one of two points of the first pivot and the first pivot in front of or behind and the rack on the head shell, and the other point changes the distance between the other point and the rack along with the reciprocating mechanism, thereby enabling the head shell to become a rocker swinging along with the first pivot; the lower jaw is arranged on the head shell by a pivot III, one end of the lower jaw is connected with the frame or the reciprocating mechanism, and when the reciprocating mechanism pushes the head shell to rock, a pivot V for arranging the transmission rocker on the head shell and the frame or the reciprocating mechanism connected with the transmission rocker are in different motion tracks. The drive rocker is thus now rocked about the fifth pivot, resulting in the lower jaw connected to the drive rocker being a rocker which rocks about the third pivot. Compared with the prior art, the utility model drives the head shell to swing by the reciprocating mechanism to present the head pitching motion, and drives the mandible to swing by the head shell to present the she movement of the mouth. The swing center of the lower jaw is determined by the pivot III, and the force for swinging the lower jaw is transmitted in the head shell by the transmission rocker, so that the pivot III can be arranged at a position relatively far away from the animal body without being limited by the arrangement on the body shell in the prior art, and no part is arranged outside the head shell, so that the toy has attractive appearance and simple structure.

The head shell is arranged on the frame through a first pivot shaft arranged in the left-right direction, a positioning rocker is further arranged between the frame and the first pivot shaft, the positioning rocker is arranged in the head shell through the first pivot shaft, and the free end of the positioning rocker faces backwards and is connected with the side link; a positioning spring is arranged between the positioning rocker and the head shell, and the positioning spring gives the positioning rocker a force to press the free end of the positioning rocker downwards; a baffle is arranged on the rocking path of the positioning rocker at the rear side of the head shell, and when the baffle is abutted against the free end of the positioning rocker, the head is in a horizontal view and a mouth is closed.

The position before or after the first pivot is connected with a reciprocating mechanism arranged on the machine frame, the position before or after the first pivot is provided with a second pivot, and the head shell is connected with the reciprocating mechanism by the second pivot, namely a moving part in the reciprocating mechanism is hinged with the head shell by the second pivot.

The position before or after the first pivot is connected with a reciprocating mechanism arranged on the frame, a head lifting arm is arranged at the position before or after the first pivot, and the head shell is connected with the reciprocating mechanism through the head lifting arm, namely a movable piece in the reciprocating mechanism is connected with the head lifting arm in a sliding way.

The frame is used for the meaning of a seat or a shell for installing various mechanical components, and also comprises a part fixed relative to the seat or the shell, namely the frame is also used for the meaning of a part fixedly installed on the frame or an outer shell for installing the frame, such as a trunk shell, a neck shell or other extending parts. The reciprocating mechanism is a mechanism formed by a cam mechanism or a crank mechanism and a sliding block or a rocker or a connecting rod connected with the cam or the crank.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention, fig. 2 is an exploded view as viewed from the right side of fig. 1, fig. 3 is a schematic structural view of the embodiment of fig. 1 in a closed state, fig. 4 is a schematic structural view of the embodiment of fig. 1 in an open state, fig. 5 is a schematic structural view of a trigger of the embodiment of fig. 1 in an assembled state, in which: 1-head shell A, 2-pivot A, 3-positioning spring, 4-positioning rocker, 5-rear shell, 6-return spring, 7-return eccentric shaft, 8-extending head gear, 9-cam, 10-cam shaft, 11-slide block A, 12-motor base, 13-front shell, 14-connecting rod A, 15-pivot four, 16-pivot three, 17-mandible A, 18-baffle, 19-pivot two, 20-lower short arm, 21-connecting rod A, 22-motor, 111-slotted hole and 112-guide groove;

fig. 6 is a schematic structural view (closed state) of another embodiment of the present invention, and fig. 7 is a schematic structural view of the open state of the embodiment of fig. 6, in which: 31-head shell B, 32-pivot B, 33-neck shell, 34-connecting rod II, 35-frame B, 36-sliding block B, 37-connecting rod B, 38-mandible B, and 39-pivot triethyl;

fig. 8 is a schematic structural view (open state) of another embodiment of the present invention, and fig. 9 is a schematic structural view of a closed state of the embodiment, in which: 41-skull-C, 42-Pivot-C, 43-head raising cam, 44-trunk shell, 45-head raising arm, 46-Link C, 47-Pivot-C and 48-mandible C;

FIG. 10 is a schematic structural view of a closed mouth of a further embodiment of the present invention, and FIG. 11 is a schematic structural view of an open mouth of the embodiment of FIG. 10, wherein: 51-first shell T, 52-fixing plate, 53-first pivot T, 54-second pivot T, 55-head raising connecting rod, 56-first shell seat, 57-connecting rod T, 58-third pivot T, 59-lower jaw T, and 60-crank;

fig. 12 is a schematic structural view showing a closed state of the mouth portion according to still another embodiment of the present invention, fig. 13 is a schematic structural view showing an opened state of the mouth portion according to the embodiment of fig. 12, and fig. 14 is an enlarged view of a region I in fig. 13, in which: 61-toy shell, 62-frame penta, 63-slide penta, 64-transmission rocker, 65-pivot penta, 66-pivot penta, 67-mandible penta, 68-upper jaw, 70-pivot penta, 71-head shell penta, 72-link penta, 91-cylindrical surface concave and 92-cylindrical surface convex.

Detailed Description

1. As shown in figures 1, 2, 3 and 4, the hamster toy comprises a head model and a frame. The frame is arranged in the body and consists of a front shell 13 and a rear shell 5, a mechanical structure of the toy is arranged in the frame, and a battery box is arranged at the bottom of the toy. The bottom of the frame is provided with a motor base 12, and a motor 20 is arranged in the motor base. The rack is provided with a slide rail and a slide block A11 matched with the slide rail, and the slide rail and the slide block A form a sliding mechanism positioned at the neck of the toy. The slide rail is in the up-down direction, the slide block A is provided with two short arms extending forwards, and the two short arms are distributed up and down to enable the slide block A to be in an F shape. The toy head model consists of a head shell 1 and a mandible shell 17, wherein the head shell is arranged on the frame through a side link shell 21 by a pivot shell 2. Namely, the rear part of the head shell A is provided with a pivot A2, and the pivot A is connected with the outer wall of the rear shell through a connecting rod A21. The head shell is also mounted on the frame by a reciprocating mechanism with a pivot shaft 19. Namely, the middle part of the head shell is provided with a pivot second 19 which hinges the head shell on an upper short arm extending from the upper end of the sliding block shell. The slide block A is connected with a driven piece of a cam mechanism arranged in the machine frame, namely the slide block is a reciprocating mechanism driven by the cam mechanism. A member is mounted on (or connected to) the slider and a cam shaft of the cam mechanism is mounted on the frame, the member is mounted on (or connected to) the frame via the reciprocating mechanism.

The mandible nail is arranged at the front bottom of the skull nail by a pivot nail 16, and is also connected with a reciprocating mechanism which is arranged on the frame by a connecting rod nail 14 by a pivot nail 15. Namely, the lower jaw has a rear pivot portion 16 for pivotally connecting the lower jaw to the lower side of the mouth portion provided on the front side of the head shell, and a front pivot portion 15 for pivotally connecting the lower jaw at a position forward of the rear pivot portion with a link member 14 connected between the front pivot portion and a lower short arm 20 of the slider member. The connecting rod A is in a curved ruler shape which is similar to the throat and is concave inwards, and the pivot four and the connecting rod A are made of plastic in a whole.

The frame, the cam mechanism comprising the slide block A, the head shell A, the side link A, the mandible A and the connecting rod A form a rod mechanism taking the head shell A and the mandible A as rocking rods respectively. The sliding block A slides upwards to jack the head shell A upwards, and the rear part of the head shell A is fixed with the distance between the head shell A and the rack by the connecting rod A, so that the head shell A is lifted upwards with a high front part and a low rear part. When the head shell is lifted upwards, the rear part of the mandible is pulled to be lifted upwards, and the distance between the middle part of the mandible and the sliding block nail is fixed by the connecting rod nail, so that the mandible is opened in a way that the front part is low and the rear part is high (the head is raised and the mouth is opened as shown in fig. 4).

The cam mechanism is as follows: the frame is internally provided with a head extending gear 8 which is connected with the output shaft of the motor through a transmission speed change mechanism and a control mechanism, a head extending cam 9 in the form of an eccentric wheel is coaxially arranged with the head extending gear, and a head extending cam shaft 10 is distributed in the front-back direction. The lower part of the sliding block A is provided with a long round hole 111, the head extending cam is matched in the long round hole, and the long round hole is a driven part of the cam. The length direction of the long round hole is transversely distributed in the left-right direction, and the two transverse ends of the long round hole are semicircular arcs. The outer diameter of the eccentric wheel serving as the extension head cam is in clearance fit with the circular arcs at two ends of the long circular hole, and the distance between the circle center of the eccentric wheel serving as the extension head cam and the rotation center of the extension head cam is less than half of the distance between the circle centers of the semicircular arcs at two transverse ends. Namely, the rotation diameter of the highest point of the cam is smaller than the distance between the two ends of the long round hole, and the upper edge and the lower edge of the long round hole are contact surfaces of the driven piece and the head extending cam. The slide block A is provided with a guide groove 112 in the vertical direction, the front and back machine shells are provided with a fixing bolt in the front and back direction to be matched with the guide groove, and the guide groove cooperates with a slide rail arranged on the machine frame to restrict the slide block to do directional movement in the vertical direction.

The rear end of the extension head camshaft is integrally provided with a reset eccentric shaft 7, a reset spring 6 is arranged between the reset eccentric shaft and the stationarity point of the outer wall of the rear shell, and the reset spring is a spiral cylindrical tension spring. When the distance between the eccentric shaft and the stagnation point is shortest by the tension spring, the head extending cam enables the sliding block to be at the lowest position, and the toy shows a state that the head retracts to the head closing nozzle.

The side link rod A between the rear part of the connecting head shell A and the outer wall of the rear machine shell is arranged in the head shell A through the positioning rocker 4. The positioning rocker is arranged in the head shell through a pivot A, the free end of the positioning rocker faces backwards and is connected with the side link A, a positioning spring 3 is arranged between the positioning rocker and the head shell A, and the free end of the positioning rocker is pressed downwards by the positioning spring. A baffle 18 is arranged on the rocking path of the positioning rocker at the rear side of the head shell, and when the height of the baffle is against the free end of the positioning rocker, the head is horizontally seen in a retraction state, or the mouth is closed when the head is horizontally seen.

With the structure, when the motor works, the extending cam shaft is driven to rotate by the extending gear, so that the extending cam rotates along with the extending cam shaft, and the eccentric rotation of the extending cam pushes the sliding block to slide up and down under the action of the long round hole matched with the extending cam shaft and the guide groove. The reset eccentric shaft connected to the back end of the extending head cam shaft has the same eccentric direction as the cam, and the reset spring is stretched between the eccentric shaft and the outer wall of the frame below the eccentric shaft, so that when the extending head cam shaft loses the torque force output by the motor, the reset spring will pull the head reset eccentric shaft to restore the extending head gear shaft to the head retracting position, i.e. the reset spring can drive the reset eccentric shaft to be in a determined angle relative to the cam shaft or the crank shaft. The slider slides upwards to lift the head shell upwards when the head extension cam starts to work. The head shell A slides upwards relative to the frame, the link rod A is pulled on the free end of the positioning rocker, and the free end abuts against the baffle plate to keep the rear part of the head shell A at a non-upward position, so that the head is in a head-up posture. The head is in a state that the head shell swings forwards and backwards in a high-back mode according to the pivot, the lower jaw is slightly in a front position at the moment, the distance between the lower jaw and the lower short arm of the sliding block is kept by the connecting rod, and the lower jaw swings forwards and backwards in a high-back mode according to the pivot to present an opening state. The extended cam shaft continues to rotate, the head begins to retract after the cam curve passes the top point, and the ports begin to be combined. Wherein the combination of the cam and the slide block is a reciprocating mechanism.

The existence of the positioning rocker and the positioning spring in the head shell enables the toy to be manually pulled open the upper jaw and the lower jaw when no electricity exists, and the assembly of the coat fur is convenient. The front end of the mandible is pulled by hand, the connection point of the mandible and the connecting rod is taken as a fulcrum, the pivot IV is taken as a force application point, and the head shell is made to swing forwards, backwards and downwards to be in a mouth opening posture (as shown in figure 5) by taking the pivot II as a fulcrum. The head shell A swings, the positioning rocker is supported by the side link A and does not swing, so that the positioning spring is stretched, at the moment, the free end of the positioning rocker swings upwards relatively to be separated from the baffle, and the positioning rocker obtains the downward pressing force of the free end, namely the head shell A obtains the force of returning to the horizontal state. When the mandible is released by the hand, the head returns to the horizontal state and the mouth is closed.

In reality, head movements of some animals are the focus of attention, and especially head movements of animals such as rats, hamsters and ferrets are regarded as the characteristics of the animals, and the head structures of the prior art toys only have one of two movements of stretching or opening, and cannot show the head movements. This example fully embodies the movement characteristics of animals having a telescoping head and neck in their head relative to their body, such as the neck roar of guinea pigs, hamsters, ferrets, and the like, in addition to raising their head and opening their mouth.

2. As shown in fig. 6, the toy is a parrot toy, the toy has a head part consisting of a head shell B31 and a lower jaw B38, a toy body is provided with a stand B35 and a neck shell 33 fixed opposite to the stand B, the head shell B is arranged on the neck shell by a pivot B32, and the lower jaw B is arranged on the head shell B by a pivot B39. The neck housing is fixed relative to the frame and can be considered to be mounted on the frame, and the head housing is directly mounted to the frame via the pivot rather than via the side links. A sliding groove is arranged in the frame, a sliding block B36 which is a component of the reciprocating mechanism is matched with the sliding groove, and the sliding groove is arranged in the up-and-down direction. The reciprocating mechanism was the same as in example 1. A connecting rod B34 is connected with the head shell B and the sliding block B, a connecting rod B37 is connected with the mandible B and the neck shell, the connecting point of the connecting rod B and the head shell B is behind the hinge point of the head shell B and the neck shell, and the connecting point of the connecting rod B and the mandible B is in front of the connecting point of the mandible B and the head shell B.

When the sliding block B slides downwards, the position of the pivot of the head shell B is unchanged, the rear part of the head shell is pulled downwards by the connecting rod B to enable the front side of the head shell B to be lifted upwards, and meanwhile, the front part of the mandible B is pulled downwards by the connecting rod B to be opened (see figure 7). Otherwise, the slide block B slides upwards, the head shell B and the lower jaw B return to the normal state, and the reciprocating mechanism is provided with a return spring to enable the slide block to be in the state after sliding upwards when no sliding thrust exists.

3. As shown in fig. 8 and 9, the toy is a river horse-shaped electric toy. The head shell third 41 is hinged with the trunk shell body 44 by a pivot third 42, the rear part of the mandible third 48 is hinged with the head shell third by a pivot third 47, the head shell is fixedly connected with a head-raising arm 45 which is matched with a head-raising cam 43 in the movement to form a cam mechanism, and a connecting rod third 46 is connected between the mandible third and the machine shell. The cam mechanism is the reciprocating mechanism of the embodiment, the head lifting arm on the head frame is connected with the cam in a sliding way, and the head lifting arm can also be connected with the sliding block in a sliding way or connected in a sliding way in a way that a long hole is matched with the crank. The mandible C rear part is a part which is used for connecting with the head shell and extends backwards from the mandible model rear end, so as to solve the problem that the mandible of animals like river horses and rhinoceros is more protrusive. The position at which the link C is connected is actually at the rear end of the mandible model, but in the case of pivot tripropyl is before the third or second pivot. When the head-up cam rotates, the head-up arm as a driven part swings along the first pivot, namely the first head shell swings along the first pivot, and simultaneously drives the second jaw to move along with the first head shell. When the head is higher at the front and lower at the back, the lower jaw is higher at the front and lower at the back (fig. 8 shows a head-raising mouth-opening shape).

In the embodiment of the present invention, the links and the side link are mostly made of metal wires, and the pivots connected to the connecting parts at both ends are formed by bending the metal wires, i.e. the pivots and the links or the side link are the same part, so that each pivot is not described in the embodiment. In addition, each pivot is arranged in the left-right direction so as to meet the up-down swinging requirement of the head shell and the lower jaw in the front-back direction and present the head pitching and the mouth opening and closing actions.

4. As shown in fig. 10 and 11, the toy is a mechanical toy in a dog shape. A fixing plate 52 is fixedly arranged in the head shell bracket 51, the middle of the fixing plate is connected with a head shell frame 56 through a pivot bracket 53, and the rear end of the fixing plate is connected with a head-up connecting rod 55 through a pivot bracket 54. The head-up connecting rod is connected with a crank 60 in the machine core to form a crank connecting rod mechanism serving as a reciprocating mechanism. The rear end of the mandible T59 is connected with the front end of the fixing plate by a pivot T58, and the three forward positions of the pivot of the mandible T are connected with the head shell frame by a connecting rod T57. When the crank rotates, the head raising connecting rod is dragged to move up and down, so that the head shell swings along the pivot I, and the lower jaw swings relative to the pivot III under the dragging of the connecting rod I. When the head is higher at the front and lower at the back, the lower jaw is higher at the front and lower at the back (fig. 11 shows a head-raising mouth-opening shape).

5. As shown in fig. 12 and 13, is a penguin-shaped toy. The head model is composed of a head shell penta 71 and a lower jaw penta 67, and is characterized in that an upper jaw 68 is fixedly embedded on the head shell penta to meet the characteristics of penguin beaks. The head shell penta is mounted on the frame penta 62 through a connecting frame penta 72, the frame penta is mounted in the toy shell 61, and the connecting frame penta is in a mode that two ends of a metal wire are folded to form a pivot, namely the pivot penta and the connecting frame penta are integrated. The pivot pin E70 is arranged on the frame E through a slide block E63 of the reciprocating mechanism to form a rod mechanism taking the head shell as a rocker. The lower jaw pentagon is arranged on the head shell pentagon through a pivot pentagon 66, the position behind the pivot pentagon on the lower jaw pentagon is connected with the sliding block pentagon through a transmission rocker 64, and the transmission rocker is arranged on the head shell pentagon through a pivot pentagon 65 to form a rod mechanism taking the lower jaw pentagon as a rocker. The reciprocating mechanism is a slide block and slide groove mechanism driven by a cam mechanism, as in example 1.

In this case, the displacement between the mandible and the head shell is still driven by the displacement between the head shell and the component moving relative to the head shell when the head is raised, but instead of the connecting rod between the mandible and the component moving relative to the head shell, a transmission rocker is used between the mandible and the component moving relative to the head shell. When the sliding block moves upwards, the head shell swings in an upward head shape with the upper end of the connecting frame rod pentagon as the center and the front is high and the back is low, namely the upward moving distance of the position of the pivot five is greater than the upward moving distance of the connecting position of the rear end of the transmission rocker and the sliding block, so that the transmission rocker is in a state of being high in the front and the back is low. And then the front end of the transmission rocker prizes the rear end of the mandible pentagon to move upwards, and the mandible pentagon is in an opening state with a low front part and a high rear part. In the embodiment, the transmission rocker is used for transmitting dislocation, so that the dislocation can be transmitted in the head shell without the angle limitation of the force application mandible, and the pivot shaft III of the mandible can be designed to be more forward-protruding without the distance limitation of the force application mandible, thereby realizing the toy design with the forward-protruding opening and closing central shaft of the mouth part and avoiding the appearance of a sharp part.

The connecting structure between the transmission rocker and the pivot third pentagon of the lower jaw and the connecting structure between the transmission rocker and the sliding block pentagon are a convex cylindrical surface on one side and a concave cylindrical surface on the other side, and the axis of the cylindrical surfaces is parallel to the swing central shaft of the transmission rocker. The cylindrical surface convex is a cylinder connected with the end part of the component, the cylindrical surface concave is a groove which is arranged at the end part of the component and is provided with a cylindrical surface bottom, which is equivalent to the connection between the long groove and the short shaft, and the cylinder or the groove can be arranged on any one of the transmission rocker, the lower jaw (or a pivot III fixed with the lower jaw) and the reciprocating movable mechanism movable piece, as long as the two parts are connected and the cylindrical surface convex and the cylindrical surface concave respectively. As shown in fig. 14, the cylindrical surface recesses 91 at both ends of the transmission rocker and the cylindrical surface protrusions 92 protruding backwards from the rear end of the mandible and protruding forwards from the sliding block. In this connection structure of the convex cylindrical surface and the concave cylindrical surface, the cylindrical surfaces are used to achieve smooth sliding between the convex cylindrical surface and the concave cylindrical surface, and therefore, the cylindrical surfaces in the convex cylindrical surface and the concave cylindrical surface include, but are not limited to, right cylindrical surfaces.

The use of the above-mentioned reciprocating mechanism is not limited to the examples, but can be replaced by various mechanical mechanisms for generating reciprocating motion, and the final objective is to make the head shell generate swing along a pivot to form a rod mechanism taking the head shell as a rocker. The first pivot is directly or through other rod parts installed on the frame or the part fixed relatively to the frame, so that the first pivot has a fixed distance from the frame.

Claims (10)

1. A head-raising mouth-opening mechanism of an animal toy comprises a head model and a frame, wherein the head model is composed of a head shell and a lower jaw; the head shell is arranged on the frame by a pivot I arranged in the left-right direction directly or through a side link and is connected with a reciprocating mechanism arranged on the frame at the position in front of or behind the pivot I to form a rod mechanism taking the head shell as a rocker; the lower jaw is arranged on the head shell by a pivot III arranged in the left-right direction, and is arranged on the rack by a connecting rod in front of the pivot III or is arranged on the rack by a reciprocating mechanism to form a rod mechanism taking the lower jaw as a rocker.

2. The upward mouth opening mechanism of animal toy as claimed in claim 1, wherein said head housing is mounted on the frame through a side link at a first pivot shaft disposed in a left-right direction and connected to the reciprocating mechanism mounted on the frame at a position in front of the first pivot shaft, and a positioning rocker is further mounted between said frame and the first pivot shaft, said positioning rocker is mounted in the head housing through the first pivot shaft, and a free end of the positioning rocker is directed rearward and connected to the side link; a positioning spring is arranged between the positioning rocker and the head shell, and gives a force for pressing the free end of the positioning rocker downwards; a baffle is arranged on the rocking path of the positioning rocker at the rear side of the head shell, and when the baffle is abutted against the free end of the positioning rocker, the head is in a horizontal view and a mouth is closed.

3. A head-raising mouth-opening mechanism of an animal toy comprises a head model and a frame, wherein the head model is composed of a head shell and a lower jaw; the head shell is arranged on the frame by a pivot I arranged in the left-right direction directly or through a side link and is connected with a reciprocating mechanism arranged on the frame at the position in front of or behind the pivot I to form a rod mechanism taking the head shell as a rocker; the lower jaw is arranged on the head shell by a third pivot arranged in the left-right direction, the position behind the third pivot on the lower jaw is connected with the rack or the reciprocating mechanism by a transmission rocker, and the transmission rocker is arranged on the head shell by a fifth pivot to form a rod mechanism taking the lower jaw as a rocker.

4. The upward mouth opening mechanism of animal toy as claimed in claim 3, wherein the position behind the third pivot on the lower jaw is connected with the frame or the reciprocating mechanism by a transmission rocker, the connection structure between the transmission rocker and the position behind the third pivot on the lower jaw and the connection structure between the transmission rocker and the frame or the reciprocating mechanism are a convex cylindrical surface on one side and a concave cylindrical surface on the other side, and the axis of the cylindrical surfaces is parallel to the swing central axis of the transmission rocker.

5. The upward mouth opening mechanism of animal toy as claimed in claim 1, 2, 3 or 4, wherein the first pivot is connected to the reciprocating mechanism installed on the frame at a position before or after the first pivot, the second pivot is connected to the first pivot at a position before or after the first pivot, and the head shell is connected to the reciprocating mechanism at the second pivot, i.e. the moving member of the reciprocating mechanism is hinged to the head shell at the second pivot.

6. The upward mouth opening mechanism of animal toy as claimed in claim 5, wherein the reciprocating mechanism is a cam mechanism or a crank mechanism, the cam shaft or the crank shaft of the cam mechanism or the crank mechanism is connected to a reset eccentric shaft, a reset spring is installed between the reset eccentric shaft and the frame, and the reset spring drives the reset eccentric shaft to be at a determined angle relative to the cam shaft or the crank shaft.

7. The upward mouth opening mechanism for an animal toy according to claim 6 wherein said reciprocating mechanism is a cam mechanism having a slider as a follower, the slider being fitted with the vertical slide groove, a long hole being provided in a lower portion of the slider, a cam in the form of an eccentric being fitted with the long hole, the long direction of the long hole being horizontal, both ends of the horizontal being semicircular arcs, an outer diameter of the eccentric as a cam being in clearance fit with the arcs of both ends of the long hole, and a distance between a center of the eccentric as a cam and the cam shaft being smaller than a half of a distance between centers of the arcs of both ends of the long hole.

8. The upward mouth opening mechanism for animal toy according to claim 1, 2, 3 or 4 wherein the head raising arm is connected to the reciprocating mechanism mounted on the frame at a position before or after the pivot I, and the head shell is connected to the reciprocating mechanism by the head raising arm, that is, the movable member of the reciprocating mechanism is slidably connected to the head raising arm.

9. The upward mouth opening mechanism for animal toy as claimed in claim 8, wherein the reciprocating mechanism is a cam mechanism or a crank mechanism, the cam shaft or the crank shaft of the cam mechanism or the crank mechanism is connected to a return eccentric shaft, a return spring is installed between the return eccentric shaft and the frame, and the return spring drives the return eccentric shaft to a determined angle relative to the cam shaft or the crank shaft.

10. The upward mouth opening mechanism for an animal toy according to claim 9 wherein the reciprocating mechanism is a cam mechanism having a slider as a follower, the slider being engaged with the vertical slide groove, the slider having a long hole at a lower portion thereof, a cam in the form of an eccentric cam being engaged with the long hole, the long direction of the long hole being transverse, both ends of the long hole being semicircular, an outer diameter of the eccentric cam being in clearance fit with circular arcs at both ends of the long hole, a distance between a center of the eccentric cam and the cam shaft being smaller than a half of a distance between centers of the circular arcs at both ends of the long hole.

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