Reciprocating propulsion mechanism

Abstract

The present invention provides a reciprocating propulsion mechanism, belonging to the field of driving devices, which includes a bracket; a push rod that moves back and forth axially relative to the bracket is arranged inside the bracket, and a locking assembly for positioning the forward position of the push rod is arranged below the push rod, and the locking assembly is fixedly arranged on the bracket; the locking assembly includes a locking block, the locking block can move up and down, move upward to correspond to the tooth groove on the push rod to limit the push rod, the locking block moves downward and disengages from the tooth groove on the push rod, and the push rod is reset under the action of the push rod return spring so that the push rod reciprocates back and forth. The present invention can improve the reliability of locking in the working in-place state, optimizes the unlocking mechanism, makes it more in line with the requirements of ergonomics, and makes the return reset operation more convenient.

Description

Technical Field

[0001] The present invention belongs to the field of driving devices, and relates to a driving structure capable of reciprocating motion, and particularly relates to a reciprocating propulsion mechanism. Background Art

[0002] Reciprocating propulsion mechanisms are widely used in various industries. Typically, they include crank-slider mechanisms and glue gun-like mechanisms. This patent is similar to glue gun-like mechanisms. Traditional glue gun mechanisms have a simple structure and high cost performance, but have the following deficiencies:

[0003] Locking depends on the friction angle, with low reliability and is not suitable for occasions with high reliability requirements; when performing the return stroke operation after the work is completed, manual pulling is required, which is inconvenient to operate; the rear-mounted unlocking mechanism is not user-friendly in terms of ergonomics and is inconvenient to operate under certain working conditions. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a reciprocating propulsion mechanism that can improve the reliability of locking in the working-in-place state, optimize the unlocking mechanism to make it more in line with ergonomic requirements, and make the return stroke reset operation more convenient.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a reciprocating propulsion mechanism, including a bracket;

[0006] A push rod that moves axially forward and backward relative to the bracket is provided inside the bracket. A locking assembly for positioning the forward position of the push rod is provided below the push rod, and the locking assembly is fixedly provided on the bracket;

[0007] The locking assembly includes a locking block that can move up and down. When moving upward, it corresponds to the tooth groove on the push rod to limit the push rod. When the locking block moves downward, it disengages from the tooth groove on the push rod, and the push rod is reset under the action of the push rod return spring, so that the push rod reciprocates back and forth.

[0008] Further, the locking assembly further includes a locking mounting seat, a trigger, and a locking compression spring. The locking mounting seat is fixedly provided inside the bracket. The lower end of the trigger extends out of the bracket. The middle of the trigger is hinged to the bracket through a rotating shaft B. A chute is provided at the upper end of the trigger, and the chute is in the structure of a kidney-shaped hole;

[0009] A guiding groove is provided at the upper end of the locking mounting seat. The locking block is arranged in the guiding groove and the two slide up and down with a clearance fit. One end of the rotating shaft C is hinged to the locking block, and the other end of the rotating shaft C is arranged in the chute. The trigger rotates relative to the locking mounting seat, so that the rotating shaft C drives the locking block to move downward;

[0010] A locking compression spring is provided at the lower end of the guiding groove, so that after the trigger is released, the locking block is reset upward under the action of the locking compression spring and corresponds to the tooth groove of the push rod.

[0011] Further, the bracket is a hollow cylinder structure and is internally provided with a plurality of reinforcing ribs. The locking mounting seat is arranged at the hollow position of the bracket, and a bushing for ensuring axial sliding between the two is arranged between the push rod and the bracket.

[0012] Further, a spring baffle is arranged on the push rod. The push rod return spring is arranged on the outer circle of the push rod and coaxially therewith. The push rod return spring is arranged between the spring baffle and one of the reinforcing ribs of the bracket, so that after the push rod is pushed forward, the push rod return spring is compressed and stressed.

[0013] Further, a stop block is also arranged on the push rod. After the push rod is reset, the stop block fits with one of the reinforcing ribs inside the bracket to limit the initial position of the push rod.

[0014] Further, a fixed handle extending downward is arranged at the front end of the bracket. A movable handle is hinged to the fixed handle, and a lower limit block is also arranged on the fixed handle for limiting the initial position of the movable handle;

[0015] A dial is fixedly arranged at the upper end of the movable handle. When the movable handle rotates, it drives the dial to move and tilt. Friction is generated between the dial and the push rod 6, and the push rod is driven to move forward under the action of the friction.

[0016] A dial return spring is arranged on the outer circle of the push rod between the dial and the reinforcing rib inside the bracket, which is used to provide a restoring force for the dial. When there is no driving force on the movable handle, it ensures that the movable handle can be in the initial position.

[0017] Further, the movable handle and the fixed handle are hinged through a rotating shaft A.

[0018] Further, the area of the outer surface of the push rod that cooperates with the dial is provided with sandblasting, knurling or threading to increase the friction.

[0019] Compared with the prior art, the present invention has the following advantages and positive effects.

[0020] The present invention improves the locking reliability through a push rod with tooth grooves, designs a locking component similar to a trigger, and cooperates with the tooth grooves to facilitate unlocking, improves the locking reliability in the working in-place state, optimizes the unlocking mechanism, makes it more in line with the requirements of ergonomics, and makes the return reset operation more convenient, which is conducive to single-handed operation, occupies a small space, and ensures the equipment maintenance in a narrow space. Description of the Drawings

[0021] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0022] Figure 1It is a cross-sectional view of the reciprocating propulsion mechanism of the present invention;

[0023] Figure 2 It is a cross-sectional view of the locking component of the present invention;

[0024] Figure 3 It is a side view of the locking component of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the trigger in the locking component of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the tooth groove of the present invention.

[0027] Reference numerals:

[0028] 1. Movable handle; 2. Fixed handle; 3. Rotating shaft A; 4. Lower limit block; 5. Paddle return spring; 6. Push rod; 7. Upper limit block; 8. Paddle; 9. Bushing; 10. Locking component; 11. Bracket; 12. Spring baffle; 13. Push rod return spring; 14. Locking mounting seat; 15. Rotating shaft B; 16. Trigger; 17. Locking block; 18. Rotating shaft C; 19. Locking compression spring; 20. Chute; 21. Tooth groove; 22. Stopper. Detailed implementation manners

[0029] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0033] As Figures 1 - 5 shown, the present invention is a reciprocating propulsion mechanism, including a movable handle 1, which serves as a driving component, is pin-connected to a fixed handle 2 through a rotating shaft A3, and pushes a dial 8 forward during rotation.

[0034] The fixed handle 2 is fixedly connected to a bracket 11;

[0035] The rotating shaft A3 realizes the pin connection between the movable handle 1 and the fixed handle 2, enabling the movable handle 1 to rotate around the fixed handle 2;

[0036] The lower limit block 4 is installed on the fixed handle 2 and is used to limit the initial position of the movable handle 1.

[0037] The dial return spring 5 passes through a push rod 6 and is installed between the dial 8 and the bracket 11, and is used to provide a restoring force for the dial 8. When there is no driving force on the movable handle 1, it ensures that the movable handle 1 can be in the initial position.

[0038] The push rod 6 is a shaft-like part and can move axially under the action of the dial 8. The push rod 6 is connected to the fixed handle 2 and the bracket 11 through a bushing, making the sliding smoother. At the same time, the push rod 6 is provided with a toothed groove structure.

[0039] The upper limit block 7 is used to limit the initial position of the dial 8. In the case of no driving force, under the action of the dial return spring 5, the dial 8 can maintain a vertical state to achieve the "separation" between the dial 8 and the push rod 6.

[0040] The dial 8 is fixed to the upper end of the movable handle 1. There is a certain distance between this part and the push rod 6. Under the action of the movable handle 1, the dial 8 tilts to a certain extent and "contacts" the push rod 6, generating frictional force, and driving the push rod 6 to move forward under the action of the frictional force.

[0041] The bushings 9 are respectively installed on the fixed handle 2 and the bracket 11 to ensure that the push rod 6 slides more smoothly.

[0042] Locking component 10, which is installed on the bracket 11 and cooperates with the tooth groove structure on the push rod 6 to achieve unlocking. After unlocking, the push rod 6 moves backward under the action of the push rod return spring 13 and finally returns to its initial position.

[0043] Bracket 11, which mainly realizes the connection and support functions.

[0044] Spring baffle 12, which is installed on the push rod 6 and is mainly used to limit the push rod return spring 13; a stop block 22 is also provided on the push rod 6, and the stop block 22 limits the rear extreme position of the push rod 6. At the rear extreme position, the stop block 22 cooperates with the rib plate inside the bracket 11 to achieve the limit.

[0045] Push rod return spring 13, which passes through the push rod 6 and is installed between the movable handle 12 and the bracket 11, and is used to provide the elastic force when the push rod 6 returns.

[0046] Locking mounting seat 14, which is installed on the bracket 11 and is mainly used to install the rotating shaft B15, trigger 16, locking block 17, rotating shaft C18 and locking compression spring 19.

[0047] Rotating shaft B15, which realizes the pin connection between the trigger 16 and the locking mounting seat 14, enabling the trigger 16 to rotate around the locking mounting seat 14.

[0048] Trigger 16, which serves as the driving mechanism of the locking component 10 and can rotate around the rotating shaft B15. A chute 20 is provided on the trigger 16. During the rotation of this part, it drives the rotating shaft C18 and the locking block 17 to move downward, finally realizing the unlocking of the locking component 10.

[0049] Locking block 17, which is installed on the locking mounting seat 14 as a slider, and at the same time this part is connected to the trigger 16 through the rotating shaft C18 (in the form of a slider). The end of this part is provided with a structure that cooperates with the tooth groove of the push rod 6.

[0050] Rotating shaft C18, which pin-connects the locking mounting seat 14 and the locking block 17 and moves as a slider on the chute of the trigger 16.

[0051] Locking compression spring 19, which is installed on the locking mounting seat 14 and provides a certain thrust to the locking block 17.

[0052] Chute 20, which is located on the trigger 16 and can add a degree of freedom to the locking component 10.

[0053] Tooth groove 21, which is located on the push rod 6 and cooperates with the end of the locking block 17, and can realize the forward movement of the push rod 6 in the driving state and the locking in the non-driving state.

[0054] Preferably, the area of the outer surface of the push rod 6 that cooperates with the paddle is provided with sandblasting, knurling or threading to increase the friction, facilitating the movement of the push rod 6 when the paddle 8 moves.

[0055] Driving process: Rotate the movable handle 1 to make the movable handle 1 rotate by a certain angle, so that the end of the movable handle 1 acts on the paddle 8. The paddle 8 tilts under the action of the movable handle 1, comes into contact with the push rod 6, and generates friction (the friction is greater than the elastic force and axial load of the push rod return spring). Continue to rotate the movable handle 1. Under the action of the movable handle 1, the paddle 8 moves forward and drives the push rod 6 to move forward by a certain distance (greater than the distance between two adjacent tooth grooves 21). At the same time, the tooth groove at the front end of the push rod 6 pushes the locking mounting seat 14 downward. After one drive is completed, the locking mounting seat 14 resets, contacts the next tooth groove 21 and locks. Thus, one drive is completed. At this time, release the movable handle 1. Under the action of the paddle return spring 5, the paddle 8 resets and drives the movable handle 1 to reset.

[0056] Unlocking process: In the locked state, under the action of the locking compression spring 19, the end of the locking block 17 contacts the tooth groove on the push rod 6 to achieve locking. Press the trigger 16. Under the action of its structural chute 20, the locking compression spring 19 and the locking block 17 move downward, and finally the locking block 17 is disengaged from the tooth groove of the push rod 6, realizing the unlocking of the push rod 6. Under the action of the push rod return spring 13, the push rod 6 resets.

[0057] The above has described a specific embodiment of the present invention in detail, but the described content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. Any equal changes and improvements made within the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. Reciprocating propulsion mechanism, characterized in that: it includes a bracket; a push rod that moves axially back and forth relative to the bracket is arranged inside the bracket, and a locking component for positioning the forward position of the push rod is arranged below the push rod, and the locking component is fixedly arranged on the bracket; the locking component includes a locking block that can move up and down, moves upward to correspond to the tooth groove on the push rod to limit the push rod, and moves downward to disengage from the tooth groove on the push rod, and the push rod is reset under the action of the push rod return spring so that the push rod reciprocates back and forth; the locking component further includes a locking mounting seat, a trigger and a locking compression spring. The locking mounting seat is fixedly arranged inside the bracket, the lower end of the trigger extends out of the bracket, the middle of the trigger is hinged to the bracket through a rotating shaft B, and a chute is arranged at the upper end of the trigger, and the chute is a kidney-shaped hole structure; a guiding groove is arranged at the upper end of the locking mounting seat, the locking block is arranged in the guiding groove and the two slide up and down with a clearance fit. One end of the rotating shaft C is hinged to the locking block, and the other end of the rotating shaft C is arranged in the chute. The trigger rotates relative to the locking mounting seat so that the rotating shaft C drives the locking block to move downward; a locking compression spring is arranged at the lower end of the guiding groove so that after the trigger is released, the locking block is reset upward under the action of the locking compression spring to correspond to the tooth groove of the push rod.

2. The reciprocating propulsion mechanism according to claim 1, characterized in that: the bracket is a hollow cylinder structure and is internally provided with a plurality of reinforcing ribs. The locking mounting seat is arranged at the hollow position of the bracket, and a bushing for ensuring axial sliding between the push rod and the bracket is arranged between them.

3. The reciprocating propulsion mechanism according to claim 1, characterized in that: a spring baffle is arranged on the push rod, the push rod return spring is arranged on the outer ring of the push rod and they are coaxially arranged. The push rod return spring is arranged between the spring baffle and one of the reinforcing ribs of the bracket so that after the push rod is pushed forward, it compresses the push rod return spring to be stressed.

4. The reciprocating propulsion mechanism according to claim 3, characterized in that: a stop block is further arranged on the push rod. After the push rod is reset, the stop block fits with one of the reinforcing ribs inside the bracket to limit the initial position of the push rod.

5. The reciprocating propulsion mechanism according to claim 1, characterized in that: a fixed handle extending downward is arranged at the front end of the bracket, a movable handle is hinged to the fixed handle, and a lower limit block is further arranged on the fixed handle for limiting the initial position of the movable handle; a dial is fixedly arranged at the upper end of the movable handle. When the movable handle rotates, it drives the dial to move and tilt, and a frictional force is generated between the dial and the push rod, and the push rod is driven to move forward under the action of the frictional force; a dial return spring is arranged on the outer ring of the push rod, and is arranged between the dial and one of the reinforcing ribs inside the bracket, and is used to provide a restoring force for the dial. When the movable handle has no driving force, it ensures that the movable handle can be in the initial position.

6. The reciprocating propulsion mechanism according to claim 5, characterized in that: the movable handle and the fixed handle are hinged through a rotating shaft A.

7. The reciprocating propulsion mechanism according to claim 5, characterized in that: the area of the outer surface of the push rod that cooperates with the dial is provided with sandblasting, knurling or threading to increase the frictional force.

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