Ejection device

Abstract

The utility model provides a catapulting device which comprises a base provided with a limiting groove; the locking assembly is rotationally connected with the base and provided with a limiting hole and an abutting block, and the abutting block is arranged close to the base and located beside the limiting hole; when the locking assembly rotates, the corresponding positions of the limiting hole and the limiting groove are changed; the pushing assembly comprises a central column, and a limiting block and a to-be-ejected object are arranged at the two ends of the central column correspondingly; the abutting block abuts against the limiting block. The elastic piece sleeves the central column, and two ends of the elastic piece are respectively connected with the locking assembly and the pushing assembly; in the locking state, the limiting block penetrates through the limiting hole and then is inserted into the limiting groove, and a part of area of the limiting hole corresponds to the limiting groove and abuts against the limiting block and the locking assembly through the elastic piece. When the limiting block abuts against the abutting block, the abutting block limits the rotation direction of the limiting block. In the ejection instant state, all the areas of the limiting hole correspond to the limiting groove, and the limiting block is ejected out of the limiting hole through the elastic piece. The locking effect is improved, and the false triggering probability is reduced.

Description

Technical Field

[0001] The utility model relates to an ejection device, in particular to an ejection device. Background Art

[0002] The ejection device is usually composed of a spring, a push rod and a base. When the push rod is separated from the base, the spring ejects the push rod, or the spring pushes the push rod to eject the object placed on the push rod (usually used in fireworks tubes, through the cooperation of the push rod and the spring, ribbons, sequins and other objects are ejected instantly to create an atmosphere);

[0003] In actual use, due to external factors (such as vibration), the relative position relationship between the push rod and the base moves, resulting in false triggering. Utility Model Content

[0004] The utility model aims to provide an ejection device, and the technical problem to be solved is to improve the locking effect of the push rod and the base and reduce the probability of false triggering.

[0005] The utility model is realized by the following technical solutions:

[0006] A ejection device, comprising:

[0007] A base, wherein a limiting groove is provided on the base;

[0008] A locking assembly, the locking assembly is rotatably connected to the base; a limiting hole and a supporting block are provided on the locking assembly, the supporting block is provided on a side close to the base and is located beside the limiting hole;

[0009] Wherein, the locking assembly is used to change the corresponding positions of the limiting hole and the limiting groove when rotating;

[0010] A pushing assembly, the pushing assembly comprising a central column, one end of the central column is provided with a limit block, and the other end of the central column is used to resist the projectile;

[0011] Wherein, the abutment block is used to abut against the side wall of the limit block;

[0012] An elastic member, the elastic member is sleeved outside the central column; one end of the elastic member is connected to the locking assembly, and the other end is connected to the pushing assembly;

[0013] Wherein, when the pushing assembly is in the locking state, the limiting block is used to pass through the limiting hole and then insert into the limiting groove, a part of the limiting hole corresponds to the limiting groove, and the limiting block is abutted against the locking assembly through the elastic member in the compressed state;

[0014] When the side wall of the limit block abuts against the abutting block, the abutting block limits the rotation direction of the limit block;

[0015] When the pushing assembly is in the ejection state, the limit block is used to pass through the limit hole and then insert into the limit slot. The entire area of ​​the limit hole corresponds to the limit slot. The limit block is ejected from the limit hole by the elastic member in the compressed state.

[0016] By rotating the locking assembly, the corresponding positions of the limiting hole and the limiting groove are changed, which provides the device with adaptability in different states. When the pushing assembly is in the locked state, the limiting block passes through the limiting hole and then inserts into the limiting groove. At this time, by rotating the locking assembly, a part of the area of ​​the limiting hole corresponds to the limiting groove. Under the elastic force of the elastic member, it is ensured that the top wall of the limiting block can abut the locking assembly, so that the limiting block is fixed by the locking assembly to prevent it from accidentally moving or falling off; the bidirectional rotation trigger of the locking assembly is changed to a unidirectional rotation trigger by the abutment block. When the locking assembly is rotated clockwise and the side wall of the limiting block abuts the upper abutment block, if the clockwise force is continued, the locking assembly cannot be rotated, and if the counterclockwise force is applied, the locking assembly rotates in the opposite direction, and the corresponding area of ​​the limiting hole and the limiting groove increases; this means that under the action of external force, the position or direction of the locking assembly cannot be easily changed, which improves the locking effect of the base and the pushing assembly and reduces the probability of false triggering.

[0017] Furthermore, the central column is bent to one side, and the bending angle is 0° to 10°.

[0018] The curved center column helps to provide stable and uniform force output during the ejection process; when the limit block pops out from the limit hole, the curved center column can transmit and disperse the ejection force, so that the ejection process proceeds smoothly and reduces accidents or errors caused by concentrated force; from a safety perspective, the curved center column increases the stability and impact resistance of the structure to a certain extent; when subjected to external force or impact, the curved center column can absorb and disperse these forces, reducing safety risks caused by structural deformation or damage.

[0019] Furthermore, the outer side wall of the central column is provided with a guide plate, and the guide plate is arranged along the length direction of the central column;

[0020] A spacing is left between the guide plate and the limiting block, and the spacing is greater than the hole depth of the limiting hole.

[0021] The above-mentioned guide plate enhances the guiding performance of the pushing assembly; since the guide plate is arranged along the length direction of the center column, when the pushing assembly is in the ejection process, the guide plate provides a clear moving path for the center column, ensuring that the pushing assembly can be ejected under the elastic force of the elastic member; the spacing between the above-mentioned guide plate and the limit block reserves space for the rotation of the locking assembly.

[0022] Furthermore, the guide plate is disposed around the outer side wall of the central column.

[0023] The guide plate is connected to the center column to form an integral structure. The guide plate is wound around the center column to reduce vibration or shaking during the ejection process. Since the center column is bent to one side, the bending angle cooperates with the winding of the guide plate to further provide stable and uniform force output during the ejection process.

[0024] Further, the locking assembly comprises a rotating cylinder and a top plate, and the rotating cylinder and the top plate are connected;

[0025] The rotating drum and the base are rotatably connected;

[0026] The limiting hole is arranged at the center of the top plate, and a first protrusion is arranged on the top plate, and the first protrusion is used to connect the elastic member.

[0027] Setting the above-mentioned limiting hole at the center position of the top plate is helpful to achieve a stable locking effect; the limiting block can be evenly stressed when inserted into the limiting hole, reducing deformation or damage that may be caused by eccentric stress; at the same time, the limiting hole set at the center position also improves the overall balance and stability of the ejection device; the above-mentioned first protrusion provides a fixing point for the elastic member, and through the connection between the first protrusion and the elastic member, it is ensured that the elastic member will not be separated from the locking assembly during ejection, reducing the probability of safety accidents.

[0028] Furthermore, a second protrusion is provided on the guide plate, and the second protrusion is used to connect the elastic member.

[0029] The above-mentioned second protrusion serves as a structure for connecting the elastic member, providing a fixing point for the elastic member; by connecting the elastic member and the second protrusion, it is ensured that the pushing assembly will not be separated from the elastic member during ejection. Combined with the fact that the elastic member will not be separated from the locking assembly during ejection, the ejection device is only used to eject objects to be ejected (such as ribbons, sequins and other objects with lower hardness), further reducing the probability of safety accidents.

[0030] Furthermore, the ejection device also includes a sleeve, and the locking assembly, the pushing assembly and the elastic member are all sleeved in the sleeve.

[0031] By placing the locking assembly, pushing assembly and elastic member inside the sleeve, the locking assembly, pushing assembly and elastic member are prevented from loosening, dislocating or interfering due to external factors during operation, thereby ensuring that the ejection device can maintain stable and reliable performance when ejected at high speed or subjected to external force impact; the sleeve also plays a protective and isolating role. Since the sleeve wraps each component inside, it effectively prevents external impurities such as dust, dirt or moisture from entering the device.

[0032] Furthermore, a limit plate is provided on the central column, and a side wall of the limit plate contacts the inner wall of the sleeve;

[0033] The above-mentioned limiting plate is used to resist the projectile.

[0034] The above-mentioned limit plate is in contact with the inner wall of the sleeve, ensuring its stability during operation. Since the limit plate is attached to the inner wall of the sleeve, the inner wall of the sleeve provides support for the push assembly during the ejection process, preventing displacement or shaking caused by vibration or impact, avoiding energy loss and deviation in the ejection direction; the above-mentioned limit plate is used to resist the projectile to be ejected. Before ejection, the projectile to be ejected is placed on the limit plate. Through the support and positioning of the limit plate, it is ensured that the projectile maintains the correct position and posture during the ejection process, thereby improving the accuracy of the ejection target.

[0035] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0036] By rotating the locking assembly, the corresponding positions of the limiting hole and the limiting groove are changed, which provides the device with adaptability in different states. When the pushing assembly is in the locked state, the limiting block passes through the limiting hole and then inserts into the limiting groove. At this time, by rotating the locking assembly, a part of the area of ​​the limiting hole corresponds to the limiting groove. Under the elastic force of the elastic member, it is ensured that the top wall of the limiting block can abut the locking assembly, so that the limiting block is fixed by the locking assembly to prevent it from accidentally moving or falling off; the bidirectional rotation trigger of the locking assembly is changed to a unidirectional rotation trigger by the abutment block. When the locking assembly is rotated clockwise and the side wall of the limiting block abuts the upper abutment block, if the clockwise force is continued, the locking assembly cannot be rotated, and if the counterclockwise force is applied, the locking assembly rotates in the opposite direction, and the corresponding area of ​​the limiting hole and the limiting groove increases; this means that under the action of external force, the position or direction of the locking assembly cannot be easily changed, which improves the locking effect of the base and the pushing assembly and reduces the probability of false triggering. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0038] Figure 1 It is a schematic diagram of the overall structure of the ejection device;

[0039] Figure 2 It is a schematic diagram of the structure after the base, the locking assembly, the pushing assembly and the elastic member are matched;

[0040] Figure 3 is a schematic diagram of the structure of the base;

[0041] Figure 4 is a structural schematic diagram of a locking assembly;

[0042] Figure 5 is another structural schematic diagram of the locking assembly;

[0043] Figure 6 is a bottom schematic diagram of the top plate;

[0044] Figure 7 It is a schematic diagram of the structure of the driving component;

[0045] Figure 8 It is a schematic diagram of the structure of the guide plate wrapped around the center column.

[0046] Marks and corresponding parts names in the attached drawings:

[0047] 10. Base; 11. Limiting groove; 12. Slide rail; 20. Locking assembly; 21. Top plate; 22. Rotating drum; 23. Limiting hole; 24. First protrusion; 25. Abutment block; 30. Pushing assembly; 31. Center column; 32. Limiting block; 33. Limiting plate; 34. Guide plate; 35. Second protrusion; 40. Elastic member; 50. Sleeve. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0049] The ejection device of the utility model is suitable for various scenes where objects need to be ejected, especially a fireworks tube structure. The ejection device is used to eject ribbons, balls, sequins and other ejected objects. The following is a detailed description of the embodiment:

[0050] Example 1

[0051] Combination Figures 2 to 7 , this embodiment 1 provides an ejection device, including: a base 10, a locking assembly 20, a pushing assembly 30 and an elastic member 40;

[0052] The base 10 is provided with a limiting groove 11 which is in a long strip shape and is used to push the upper limiting block 32 of the assembly 30 for insertion. The base 10 is used to ensure the stability and load-bearing capacity of the ejection device.

[0053] The locking assembly 20 and the base 10 are rotationally connected via the slide rail 12 and the slide groove, so that the locking assembly 20 can rotate relative to the base 10; a limiting hole 23 and a stop block 25 are provided on the locking assembly 20, the limiting hole 23 is in the shape of an elongated strip, and the middle part of the limiting hole 23 is in the shape of a circular hole, the circular hole is for the central column 31 of the pushing assembly 30 to pass through, and the elongated shape is for the limiting block 32 of the pushing assembly 30 to pass through; the stop block 25 is located beside the limiting hole 23 and is arranged on a side close to the base 10, and is in the shape of a raised rectangular block, which abuts against the side wall of the limiting block 32 in a certain state under the locking state, and this state is the state when the locking assembly 20 cannot rotate in one direction.

[0054] The above-mentioned pushing assembly 30 includes a central column 31 and a limit block 32. The central column 31 can be made of a lightweight but strong material, such as injection molding, to ensure the speed and stability during ejection; a limit block 32 is provided at one end of the central column 31. The limit block 32 is a rectangular block structure, and its size is slightly smaller than the limit hole 23 and the limit groove 11 to ensure that the limit block 32 can smoothly pass through the limit hole 23 and the limit groove 11. The other end of the central column 31 is used to resist the ejection object, which can be ribbons, balls, sequins and other objects.

[0055] The elastic member 40 is sleeved outside the central column 31, one end of which is connected to the locking assembly 20, and the other end is connected to the pushing assembly 30. The elastic member 40 can be a spring with good elasticity and restoring force, providing power for the pushing assembly 30 during the ejection process.

[0056] Operation process:

[0057] In the initial state, the pushing assembly 30 is in a locked state; at this time, the limiting block 32 passes through the limiting hole 23 and is inserted into the limiting groove 11, and the locking assembly 20 is rotated so that a part of the limiting hole 23 corresponds to the limiting groove 11, thereby achieving locking; since the elastic member 40 is in a compressed state at this time, the limiting block 32 abuts against the bottom of the locking assembly 20, thereby enhancing the locking effect;

[0058] When an object needs to be ejected, the object to be ejected is first placed on the ejection end of the center column 31; then, by operating the locking assembly 20 (such as rotating the locking assembly 20), the entire area of ​​the limiting hole 23 corresponds to the limiting groove 11; at this time, since the elastic member 40 is still in a compressed state, the elastic force of the elastic member 40 is released instantly, pushing the pushing assembly 30 forward, thereby causing the object to be ejected to be ejected at high speed; since this process occurs in an instant, it is called the "ejection instant state".

[0059] The above-mentioned abutment block 25 is used to change the bidirectional rotation trigger of the locking assembly 20 into a unidirectional rotation trigger. When the locking assembly 20 is rotated clockwise and the side wall of the limit block 32 abuts against the upper abutment block 25, if the clockwise force continues to be applied, the locking assembly 20 cannot be rotated, and if the counterclockwise force is applied, the locking assembly 20 rotates in the opposite direction, and the corresponding areas of the limit hole 23 and the limit groove 11 are increased; when the side wall of the limit block 32 abuts against the abutment block 25, the abutment block 25 can limit the rotation direction of the limit block 32, which means that under the action of external force, the position or direction of the locking assembly 20 cannot be easily changed, thereby improving the locking effect of the base 10 and the pushing assembly 30 and reducing the probability of false triggering.

[0060] Example 2

[0061] Based on Example 1, Figure 7 The central column 31 is bent to one side, and the bending angle is 0° to 10°.

[0062] The curved center column 31 helps to provide stable and uniform force output during the ejection process; when the limit block 32 pops out from the limit hole 23, the curved center column 31 can transmit and disperse the ejection force, so that the ejection process proceeds smoothly and reduces accidents or errors caused by concentrated force; from a safety perspective, the curved center column 31 increases the stability and impact resistance of the structure to a certain extent; when subjected to external force or impact, the curved center column 31 can absorb and disperse these forces, reducing safety risks caused by structural deformation or damage.

[0063] Example 3

[0064] Based on Example 2, Figure 8 The outer wall of the central column 31 is provided with a guide plate 34, and the guide plate 34 is arranged along the length direction of the central column 31;

[0065] There is a distance between the guide plate 34 and the limiting block 32 , and the distance is greater than the depth of the limiting hole 23 .

[0066] The above-mentioned guide plate 34 enhances the guiding performance of the pushing assembly 30; since the guide plate 34 is arranged along the length direction of the center column 31, when the pushing assembly 30 is in the ejection process, the guide plate 34 provides a clear moving path for the center column 31, ensuring that the pushing assembly 30 can be ejected under the elastic force of the elastic member 40; the distance between the above-mentioned guide plate 34 and the limit block 32 reserves space for the rotation of the locking assembly 20.

[0067] Example 4

[0068] Based on Example 3, Figure 8 The guide plate 34 is disposed around the outer wall of the center column 31 .

[0069] The guide plate 34 is connected to the center column 31 to form an integral structure. The guide plate 34 is wound around the center column 31 to reduce vibration or shaking during the ejection process. Since the center column 31 is bent to one side, the bending angle cooperates with the winding of the guide plate 34 to further provide stable and uniform force output during the ejection process.

[0070] Example 5

[0071] Based on any of the above embodiments, Figure 4 or Figure 5 The locking assembly 20 comprises a rotating drum 22 and a top plate 21, and the rotating drum 22 and the top plate 21 are connected;

[0072] The rotating drum 22 is rotatably connected to the base 10;

[0073] The above-mentioned limiting hole 23 is set at the center of the top plate 21, and the above-mentioned top plate 21 is provided with a first protrusion 24. Figure 6 The first protrusion 24 is used to connect the elastic member 40 .

[0074] Setting the above-mentioned limiting hole 23 at the center position of the top plate 21 is helpful to achieve a stable locking effect; the limiting block 32 can be evenly stressed when inserted into the limiting hole 23, reducing deformation or damage that may be caused by eccentric stress; at the same time, the limiting hole 23 set at the center position also improves the overall balance and stability of the ejection device; the above-mentioned first protrusion 24 provides a fixing point for the elastic member 40, and the connection between the first protrusion 24 and the elastic member 40 ensures that the elastic member 40 will not separate from the locking assembly 20 during ejection, reducing the probability of safety accidents.

[0075] Example 6

[0076] Based on Example 5, Figure 8 A second protrusion 35 is provided on the guide plate 34 , and the second protrusion 35 is used to connect the elastic member 40 .

[0077] The above-mentioned second protrusion 35 serves as a structure for connecting the elastic member 40 and provides a fixing point for the elastic member 40. By connecting the elastic member 40 and the second protrusion 35, it is ensured that the pushing component 30 will not be separated from the elastic member 40 during ejection. Combined with the fact that the elastic member 40 will not be separated from the locking component 20 during ejection, the ejection device is only used to eject objects to be ejected (such as ribbons, sequins and other objects with lower hardness), further reducing the probability of safety accidents.

[0078] Example 7

[0079] Based on any of the above embodiments, Figure 1The ejection device further includes a sleeve 50 , in which the locking assembly 20 , the pushing assembly 30 and the elastic member 40 are all sleeved.

[0080] By placing the locking assembly 20, the pushing assembly 30 and the elastic member 40 inside the sleeve 50, the locking assembly 20, the pushing assembly 30 and the elastic member 40 are prevented from loosening, dislocating or interfering due to external factors during operation, thereby ensuring that the ejection device can maintain stable and reliable performance when ejected at high speed or subjected to external force impact; the sleeve 50 also plays a protective and isolating role. Since the sleeve 50 wraps each component inside, it effectively prevents external impurities such as dust, dirt or moisture from entering the device.

[0081] Specific embodiments, combined with Figure 7 A limit plate 33 is provided on the central column 31, and the side wall of the limit plate 33 contacts the inner wall of the sleeve 50;

[0082] The limiting plate 33 is used to resist the projectile.

[0083] The above-mentioned limit plate 33 contacts the inner wall of the sleeve 50, ensuring its stability during operation. Since the limit plate 33 is attached to the inner wall of the sleeve 50, the inner wall of the sleeve 50 provides support for the push assembly 30 during the ejection process, preventing displacement or shaking caused by vibration or impact, avoiding energy loss and deviation in the ejection direction; the above-mentioned limit plate 33 is used to resist the projectile to be ejected. Before ejection, the projectile to be ejected is placed on the limit plate 33. Through the support and positioning of the limit plate 33, it is ensured that the projectile maintains the correct position and posture during the ejection process, thereby improving the accuracy of the ejection target.

[0084] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An ejection device, characterized in that: include: A base (10), wherein a limiting groove (11) is provided on the base (10); A locking assembly (20), the locking assembly (20) being rotatably connected to the base (10); a limiting hole (23) and a supporting block (25) are provided on the locking assembly (20); the supporting block (25) is provided on a side close to the base (10) and is located beside the limiting hole (23); Wherein, the locking assembly (20) is used to change the corresponding positions of the limiting hole (23) and the limiting groove (11) when rotating; A pushing assembly (30), the pushing assembly (30) comprising a central column (31), one end of the central column (31) being provided with a limit block (32), and the other end of the central column (31) being used for resisting against a projectile; Wherein, the abutment block (25) is used to abut against the side wall of the limiting block (32); An elastic member (40), wherein the elastic member (40) is sleeved outside the central column (31); one end of the elastic member (40) is connected to the locking assembly (20), and the other end is connected to the pushing assembly (30); Wherein, when the pushing assembly (30) is in a locked state, the limiting block (32) is used to pass through the limiting hole (23) and then be inserted into the limiting groove (11), a partial area of ​​the limiting hole (23) corresponds to the limiting groove (11), and the limiting block (32) is brought into contact with the locking assembly (20) through the elastic member (40) in a compressed state; When the side wall of the limit block (32) abuts against the abutment block (25), the abutment block (25) limits the rotation direction of the limit block (32); When the pushing assembly (30) is in the ejection instant state, the limiting block (32) is used to pass through the limiting hole (23) and then be inserted into the limiting groove (11), the entire area of ​​the limiting hole (23) corresponds to the limiting groove (11), and the limiting block (32) is ejected out of the limiting hole (23) by the elastic member (40) in the compressed state.

2. The ejection device according to claim 1, characterized in that: The central column (31) is bent to one side, and the bending angle is 0° to 10°.

3. The ejection device according to claim 2, characterized in that: The outer side wall of the central column (31) is provided with a guide plate (34), and the guide plate (34) is arranged along the length direction of the central column (31); A spacing is left between the guide plate (34) and the limiting block (32), and the spacing is greater than the hole depth of the limiting hole (23).

4. The ejection device according to claim 3, characterized in that: The guide plate (34) is disposed around the outer side wall of the central column (31).

5. The ejection device according to claim 1, characterized in that: The locking assembly (20) comprises a rotating drum (22) and a top plate (21), wherein the rotating drum (22) and the top plate (21) are connected; The rotating drum (22) and the base (10) are rotatably connected; The limiting hole (23) is arranged at the center of the top plate (21), and a first protrusion (24) is arranged on the top plate (21), and the first protrusion (24) is used to connect the elastic member (40).

6. The ejection device according to claim 4, characterized in that: The guide plate (34) is provided with a second protrusion (35), and the second protrusion (35) is used to connect with the elastic member (40).

7. The ejection device according to claim 1, characterized in that: The ejection device also includes a sleeve (50), and the locking assembly (20), the pushing assembly (30) and the elastic member (40) are all sleeved in the sleeve (50).

8. The ejection device according to claim 7, characterized in that: A limiting plate (33) is provided on the central column (31), and a side wall of the limiting plate (33) is in contact with an inner wall of the sleeve (50); The limiting plate (33) is used to resist the projectile.

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