Claw adjustment device for a claw game machine

Abstract

A claw adjusting device for a pinball game machine, the pinball game machine comprising a driving assembly, a core rod telescopically arranged on the driving assembly, a receiving seat connected to a bottom end of the core rod, a plurality of claw bodies each having one end pivotally connected to the receiving seat, and a plurality of linkage rods each pivotally connected to the claw bodies. The claw adjusting device comprises a sleeve ring and a plurality of positioning pins for pivotally arranging the linkage rods on the sleeve ring. The sleeve ring comprises an outer ring body surrounding the driving assembly, and a plurality of pivot seats each having a plurality of insertion holes defined therein. The positioning pins can be removed without using any tools, and can be reinserted into the desired insertion holes according to the requirements, so as to change the closing degree of the claw bodies, adjust the distance between the claw bodies after closing, and facilitate quick replacement of parts and maintenance.

Description

Technical Field

[0001] This utility model relates to an adjustment device for the gripper of a gripper, and more particularly to a gripper adjustment device for use in a gripper game machine that can adjust the gripper closure degree. Background Technology

[0002] See Figure 1 The gripper device 1 of a general gripper, as described in the utility model patent, includes a drive assembly 11, a core rod 12 coaxially mounted on the drive assembly 11, a receiving seat 13 connected to the bottom end of the core rod 12, a plurality of claw bodies 14 arranged in a ring at equal angular intervals and pivotally connected to the receiving seat 13, and a plurality of connecting rods 15 respectively connecting the claw bodies 14 and the drive assembly 11. The drive assembly 11 can drive the core rod 12 to extend and retract relative to itself through an internal coil, so that the receiving seat 13 moves upward and downward. When the receiving seat 13 moves upward to its highest position, the end of each claw body 14 pivotally connected to the receiving seat 13 also rises. This causes the claw body 14 to swing around the pivot point between the corresponding connecting rod 15 and the claw body 14 as a fulcrum, so that the other end of the claw body 14 not connected to the receiving seat 13 extends downward and inward. The claw bodies 14 cooperate with each other to achieve the action of retracting the claw. Conversely, when the receiving seat 13 moves downward to its lowest position, the claw body 14 will open outward to achieve the action of opening the claw. However, with this design of the gripper device 1, the closing degree of the claw body 14 cannot be adjusted and can only be one size. Therefore, when different sizes and large differences in volume are placed in the gripper machine, it is necessary to replace the gripper device 1 with different closing degrees to correspond to them, which is extremely costly and inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a gripper adjustment device that can quickly adjust the gripper closure degree.

[0004] This utility model discloses a gripper adjustment device for a gripper game machine. The gripper game machine includes a drive assembly, a core rod retractably mounted on the drive assembly, a receiving seat connected to the bottom end of the core rod, a plurality of gripper bodies with one end pivotally connected to the receiving seat and spaced apart from each other circumferentially, and a plurality of connecting rods respectively pivotally connected to the gripper bodies. The gripper adjustment device is characterized in that: the gripper adjustment device includes a collar and a plurality of positioning pins. The collar includes an outer ring body surrounding the drive assembly and a plurality of pivot seats protruding radially from the outer ring body. The pivot seats are spaced apart circumferentially and each defines a plurality of axially arranged insertion holes. The positioning pins detachably pivot the connecting rods onto the pivot seats. Each positioning pin can be pulled out and inserted through a corresponding connecting rod and into one of the insertion holes of the corresponding pivot seat.

[0005] The gripper adjustment device of this utility model is characterized in that: each positioning pin includes a pin body defining an internal space, a limiting bead disposed in the internal space and partially exposed outside the pin body, and a spring disposed in the internal space. One end of the pin body has an opening that communicates with the internal space and allows the limiting bead to pass through partially and be exposed outside. The two ends of the spring respectively abut against the pin body and the limiting bead.

[0006] The gripper adjustment device of this utility model is characterized in that: each positioning pin has a through hole at the other end, and the positioning pin also includes a pull ring that passes through the through hole and is in the shape of an annulus.

[0007] The gripper adjustment device of this utility model is characterized in that: the collar further includes a plurality of clamping members that are radially inserted through the outer ring body and spaced apart from each other circumferentially. The clamping members can be tightened to press against the driving component, thereby fixing the outer ring body to the driving component. When the clamping members are not tightened and do not press against the driving component, the outer ring body can be adjusted to move up and down axially relative to the driving component.

[0008] The gripper adjustment device of this utility model is characterized in that: the pivot seat of the collar is integrally connected to the outer ring body and arranged in a ring shape at equal angles to each other, and each pivot seat is plate-shaped and extends along the radial and axial directions of the outer ring body.

[0009] The beneficial effects of this utility model are as follows: the insertion holes on each pivot seat are arranged axially from high to low, allowing the user to remove the positioning pins without additional tools and reinsert them into the required insertion holes as needed to adjust the inclination of the linkage rod, thereby changing the closure degree of the claw body. When the positioning pin is inserted into a higher insertion hole, the claw bodies are relatively far apart when retracted; conversely, when the positioning pin is inserted into a lower insertion hole, the claw bodies are relatively close together when retracted, achieving the effect of quickly adjusting the closure degree. Furthermore, the positioning pins also facilitate quick component replacement, allowing for rapid disassembly without tools, improving the efficiency and convenience of maintenance and repair. Attached Figure Description

[0010] Figure 1 It is a 3D diagram illustrating the gripper device of a typical gripper machine;

[0011] Figure 2 This is a perspective view illustrating an embodiment of the gripper adjustment device for the gripper game machine of this utility model;

[0012] Figure 3 This is a perspective view illustrating the collar in the described embodiment;

[0013] Figure 4 This is an incomplete top view illustrating one of the locating pins in the described embodiment;

[0014] Figure 5 This is a schematic diagram illustrating one method of adjusting the degree of closure in the described embodiment; and

[0015] Figure 6 This is a schematic diagram illustrating another way to adjust the closure degree in the described embodiment. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] See Figure 2 An embodiment of the gripper adjustment device for a gripper game machine of this utility model includes a cylindrical drive assembly 21, a retractable core rod 22 disposed on the drive assembly 21, a receiving seat 23 connected to the bottom end of the core rod 22, three gripper bodies 24 pivotally connected at one end to the receiving seat 23 and spaced apart from each other circumferentially, and three connecting rods 25 respectively pivotally connected to the gripper bodies 24. The gripper adjustment device includes a collar 3 adjustablely fixed to the drive assembly 21, and three positioning pins 4 respectively pivotally mounting the connecting rods 25 to the collar 3. Figure 2 (Due to the perspective, only two of them are shown).

[0018] See Figure 2 and Figure 3 The collar 3 includes an outer ring body 31 surrounding the outer peripheral surface of the drive assembly 21, and three pivot seats 32 protruding radially from the outer ring body 31. Figure 2 (Only two are shown due to the viewing angle), and multiple clamping members 33 that are radially inserted through the outer ring body 31 and spaced apart from each other circumferentially. Figure 2(Only two are shown due to perspective limitations). The pivot seat 32 is integrally connected to the outer ring body 31 and arranged in a ring at equal angles. Each pivot seat 32 is plate-shaped and extends radially and axially along the outer ring body 31. The pivot seat 32 defines a plurality of insertion holes 321 arranged axially from top to bottom. The clamping members 33 are in pairs (but of course, other numbers can also be in a group). The two clamping members 33 in each group are located circumferentially between two adjacent pivot seats 32 and screwed onto the outer ring body 31. The clamping members 33 can be tightened to press against the drive assembly 21, thereby fixing the outer ring body 31 onto the drive assembly 21. When the clamping members 33 are not tightened and do not press against the drive assembly 21, the outer ring body 31 can be adjusted to move up and down axially relative to the drive assembly 21. It should be noted that the number of pivot seats 32 can be determined according to the number of connecting rods 25 and claw bodies 24, and the number of insertion holes 321 opened on each pivot seat 32 can be determined according to the required adjustment level, and is not limited to the number shown in this embodiment.

[0019] See Figure 2 , Figure 3 ,and Figure 4Each positioning pin 4 includes a pin body 41 defining an internal space 411, a limiting bead 42 disposed in the internal space 411, a spring 43 disposed in the internal space 411, and a pull ring 44 disposed on the pin body 41. The front end of the pin body 41 has an opening 412 communicating with the internal space 411, and the rear end has a radially penetrating through hole 413. The diameter of the opening 412 is smaller than the internal space 411 (the difference is small and not easily seen in the drawing), so that the limiting bead 42 cannot completely pass through the opening 412 but can partially protrude from the opening 412 and be exposed to the outside. The two ends of the spring 43 respectively abut against the pin body 41 and the limiting bead 42, so that without other external force, the spring 43 can push the limiting bead 42, causing the limiting bead 42 to at least partially protrude from the opening 412. The pull ring 44 passes through the through hole 413 and is mounted on the pin 41, and has the freedom to rotate relative to the pin 41 with the axis of the through hole 413 as the axis of rotation. The pin 41 can be pulled through one of the connecting rods 25 and inserted into one of the insertion holes 321 of one of the pivot seats 32. When the front end of the pin 41 passes through the hole of the connecting rod 25 and the insertion hole 321, the limiting bead 42 will be pushed and compress the spring 43, so that the limiting bead 42 will retract into the internal space 411 without producing a stopping effect. When the pin 41 pivots the connecting rod 25 to the pivot seat 32, the spring 43 will push the limiting bead 42 out again. In this way, the limiting bead 42 can produce a limiting effect (the other end is limited by the pull ring 44), preventing the pin 41 from detaching from the connecting rod 25 and the pivot seat 32.

[0020] See Figure 3 , Figure 5 ,and Figure 6 In this embodiment, during use, the user only needs to pull the pull ring 44 to quickly pull out the pin 41 without relying on other tools, and then reinsert the positioning pin 4 into the required insertion hole 321 as needed to adjust the inclination of the linkage rod 25. This will cause the linkage to work as described above. Figure 5 The angle of the claw body 24 is adjusted as shown, thereby changing the degree of closure of the claw body 24 (i.e., the distance after the claws are retracted). When the positioning pin 4 is inserted into the higher insertion hole 321, the claw bodies 24 are relatively far apart in the retracted state; conversely, when the positioning pin 4 is inserted into the lower insertion hole 321, the claw bodies 24 are relatively close to each other in the retracted state. This achieves the effect of segmented and rapid adjustment of the degree of closure. In addition, after loosening the clamping member 33, the user can also move the collar 3 up and down along the drive assembly 21 to the desired position, thereby achieving the desired effect. Figure 6The closure degree is further adjusted steplessly. Similarly, when the collar 3 is in a higher position, the claws 24 are relatively far apart when closed; conversely, when the collar 3 is in a lower position, the claws 24 are relatively close together when closed. Users can flexibly combine the above-mentioned stepped and stepless adjustments to achieve a balance between quick and precise adjustments. In addition to quickly adjusting the closure degree, this new invention also allows for the disassembly of the grippers by quickly pulling out the positioning pin 4 without relying on other tools, improving the efficiency and convenience of maintenance, replacement, and repair.

[0021] In summary, this utility model provides two methods for adjusting the closure degree. One method involves quickly inserting and removing the positioning pin 4 to change its insertion position, while the other method involves loosening the clamping member 33 and adjusting the height of the collar 3. The former requires no tools and is a step-by-step adjustment, meaning that the user can quickly adjust to a specific closure degree. It is simple to operate and highly convenient. This function can also be applied to quick disassembly, maintenance, and repair of the grippers and related components. Although the latter requires tools, its stepless adjustment allows the user to make more precise adjustments. The combination of the two methods creates a more versatile application, thus effectively achieving the purpose of this utility model.

Claims

1. A gripper adjustment device for a gripper game machine, the gripper game machine comprising a drive assembly, a core rod retractably disposed on the drive assembly, a receiving seat connected to the bottom end of the core rod, a plurality of gripper bodies with one end pivotally connected to the receiving seat and spaced apart from each other circumferentially, and a plurality of connecting rods respectively pivotally connected to the gripper bodies; characterized in that: The gripper adjustment device includes a collar and a plurality of positioning pins. The collar includes an outer ring body surrounding the drive assembly and a plurality of pivot seats protruding radially from the outer ring body. The pivot seats are spaced apart from each other circumferentially and each defines a plurality of axially arranged insertion holes. The positioning pins detachably pivot the connecting rods onto the pivot seats respectively. Each positioning pin can be pulled out to pass through a corresponding connecting rod and is inserted into one of the insertion holes of the corresponding pivot seat.

2. The gripper adjustment device according to claim 1, characterized in that: Each positioning pin includes a pin body defining an internal space, a limiting bead disposed in the internal space and partially exposed outside the pin body, and a spring disposed in the internal space. One end of the pin body has an opening that communicates with the internal space and allows the limiting bead to pass through partially and be exposed to the outside. The two ends of the spring abut against the pin body and the limiting bead, respectively.

3. The gripper adjustment device according to claim 2, characterized in that: Each positioning pin has a radially penetrating hole at its other end, and the positioning pin also includes a ring-shaped pull ring that passes through the hole.

4. The gripper adjustment device according to claim 1, characterized in that: The collar also includes a plurality of clamping members that are radially inserted through the outer ring body and circumferentially spaced from each other. The clamping members can be tightened to press against the drive assembly, thereby fixing the outer ring body to the drive assembly. When the clamping members are not tightened and do not press against the drive assembly, the outer ring body can be adjusted to move up and down axially relative to the drive assembly.

5. The gripper adjustment device according to claim 1, characterized in that: The pivot seat of the collar is integrally connected to the outer ring body and arranged in a ring shape at equal angles to each other. Each pivot seat is plate-shaped and extends along the radial and axial directions of the outer ring body.

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