A linear motion energy storage mechanism

Abstract

The invention discloses a linear motion energy storage mechanism, which includes a housing, a screw, a screw nut, an elastic member, a driving mechanism, and a locking mechanism. The screw nut is screwed on the screw, the elastic member is connected to the screw, and the driving mechanism is connected to the screw nut. When storing energy, the driving mechanism drives the screw nut to rotate, the locking mechanism restricts the screw to rotate, the screw nut drives the screw to perform linear motion, and the screw compresses the elastic member. When discharging energy, the locking mechanism releases the restriction on the screw, and the elastic member drives the screw to rotate and reset. The linear motion energy storage mechanism of the invention has a reasonable structure, can easily realize energy storage and energy dissipation, and has the advantages of convenient operation and high safety.

Description

Technical Field

[0001] The invention relates to the technical field of energy storage, and in particular to a linear motion energy storage mechanism. Background Art

[0002] Energy storage mechanisms are often used in transmission systems to provide quick-release spring energy. Energy storage mechanisms need to bear large axial pressure when storing energy. In order to increase the safety of the structure, after the energy storage mechanism stops storing energy midway, it needs to be able to easily release energy and reset. However, most existing energy storage mechanisms for handheld tools are not designed reasonably, and it is difficult to easily reset when releasing energy, resulting in insufficient safety. Therefore, a new energy storage mechanism is urgently needed to solve the above problems. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a linear motion energy storage mechanism with reasonable structure, easy energy release and reset, and high safety. The following technical solutions are adopted:

[0004] In order to solve the above problems, the present invention provides a linear motion energy storage mechanism, which includes a housing, on which a screw rod, a screw rod nut, an elastic member, a front end limit mechanism, a driving mechanism, and a locking mechanism are provided, the screw rod nut is screwed on the screw rod, the two ends of the elastic member are respectively connected to the front end limit mechanism and the screw rod, and the driving mechanism is connected to the screw rod nut;

[0005] When storing energy, the driving mechanism drives the screw nut to rotate, the locking mechanism restricts the screw from rotating, the screw nut drives the screw to move linearly, and the screw compresses the elastic member;

[0006] When the energy is released, the locking mechanism releases the restriction on the screw rod, and the elastic member drives the screw rod to rotate and reset.

[0007] As a further improvement of the present invention, the elastic member includes a first pressure spring and a second pressure spring, and a sliding base is also provided on the shell. The two ends of the first pressure spring are respectively connected to the sliding base and the front end limiting mechanism, one end of the second pressure spring is connected to the screw rod, and the other end is connected to the sliding base through a rotating assembly.

[0008] As a further improvement of the present invention, the rotating assembly includes a bearing, and the second pressure spring is rotatably connected to the sliding base via the bearing.

[0009] As a further improvement of the present invention, the rotating assembly also includes a bearing end cover and an anti-dropout pin, the bearing end cover is fixed to the sliding base through the anti-dropout pin, and the second pressure spring is connected to the bearing through the bearing end cover.

[0010] As a further improvement of the present invention, the bearing is a needle roller bearing.

[0011] As a further improvement of the present invention, a fixing block is fixed to the front end of the screw rod, and the rear end of the second pressure spring is fixedly connected to the fixing block.

[0012] As a further improvement of the present invention, the locking mechanism is a clutch.

[0013] As a further improvement of the present invention, the driving mechanism is a rotating motor.

[0014] As a further improvement of the present invention, the screw rod is a ball screw rod.

[0015] Beneficial effects of the present invention:

[0016] The linear motion energy storage mechanism of the present invention has a reasonable structure, can easily realize energy storage and energy release, and has the advantages of convenient operation and high safety.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the linear motion energy storage mechanism in the preferred embodiment of the present invention.

[0019] Marking description: 100, housing; 10, screw; 20, screw nut; 31, first pressure spring; 32, second pressure spring; 40, driving mechanism; 50, locking mechanism; 60, sliding base; 70, front end limit mechanism; 81, bearing; 82, bearing end cover; 83, anti-drop pin; 90, fixing block. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0021] like Figure 1As shown, the linear motion energy storage mechanism in the preferred embodiment of the present invention comprises a housing 100, on which a screw rod 10, a screw rod nut 20, an elastic member, a driving mechanism 40, a locking mechanism 50 and a front end limiting mechanism 70 are arranged, the screw rod nut 20 is screwed on the screw rod 10, the two ends of the elastic member are respectively connected to the front end limiting mechanism 70 and the screw rod 10, and the driving mechanism 40 is connected to the screw rod nut 20. After the front end limiting mechanism 70 is released, the elastic member will be released from compression and the spring energy will be quickly released.

[0022] When storing energy, the driving mechanism 40 drives the screw nut 20 to rotate, the locking mechanism 50 restricts the screw 10 from rotating, the screw nut 20 drives the screw 10 to perform linear motion, and the screw 10 compresses the elastic member.

[0023] When the energy is released, the locking mechanism 50 releases the restriction on the screw rod 10, and the elastic member drives the screw rod 10 to rotate and reset.

[0024] In some embodiments, the elastic member includes a first pressure spring 31 and a second pressure spring 32, and a sliding base 60 is further provided on the housing 100. The two ends of the first pressure spring 31 are respectively connected to the sliding base 60 and the front end limit mechanism 70, and one end of the second pressure spring 32 is connected to the screw rod 10, and the other end is connected to the sliding base 60 through a rotating assembly. It is achieved that when dissipating energy, the second pressure spring 32 rotates with the screw rod 12.

[0025] The two-stage design of the first pressure spring 31 and the second pressure spring 32 solves the problem of easy deformation in the middle when a single spring is too long, and by adding a sliding base 60 between the first pressure spring 31 and the second pressure spring 32, the problem of spring deformation and bending is solved without affecting the overall performance of the spring, while ensuring the stability of the structure.

[0026] Optionally, a slide rail is provided on the housing 100, and the sliding base 60 is connected to the slide rail via the slide.

[0027] In some embodiments, the rotating assembly includes a bearing 81 , and the second pressure spring 32 is rotatably connected to the sliding base 60 via the bearing 81 .

[0028] In some embodiments, the rotating assembly further includes a bearing end cover 82 and an anti-drop pin 83, the bearing end cover 82 is fixed to the sliding base 60 through the anti-drop pin 83, the second pressure spring 32 is connected to the bearing 81 through the bearing end cover 82, and the anti-drop pin 83 can prevent the bearing end cover 82 from being separated from the sliding base 60 during the retreat process. Optionally, the circumference and end of the bearing end cover 82 are respectively connected to the sliding base 60 through the bearing 81 to further ensure the stability of the connection.

[0029] Optionally, the bearing 81 is a needle roller bearing. Further, the end of the bearing end cover 82 is rotatably connected to the sliding base 60 through a thrust needle roller bearing.

[0030] In some embodiments, a fixing block 90 is fixed to the front end of the screw rod 10 , and the rear end of the second pressure spring 32 is fixedly connected to the fixing block 90 . When the screw rod 10 moves, it drives the fixing block 90 , and the fixing block 90 drives the second pressure spring 32 .

[0031] Optionally, the locking mechanism 50 is a clutch, the driving mechanism 40 is a rotary motor, and the screw 10 is a ball screw 10 .

[0032] The linear motion energy storage mechanism of the present invention has a reasonable structure, can easily realize energy storage and energy release, and has the advantages of convenient operation and high safety.

[0033] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A linear motion energy storage mechanism, characterized in that: It comprises a housing, on which a screw rod, a screw rod nut, an elastic member, a front-end limiting mechanism, a driving mechanism, and a locking mechanism are arranged, the screw rod nut is screwed on the screw rod, the two ends of the elastic member are respectively connected to the front-end limiting mechanism and the screw rod, and the driving mechanism is connected to the screw rod nut; When storing energy, the driving mechanism drives the screw nut to rotate, the locking mechanism restricts the screw from rotating, the screw nut drives the screw to move linearly, and the screw compresses the elastic member; When the energy is released, the locking mechanism releases the restriction on the screw rod, and the elastic member drives the screw rod to rotate and reset; The elastic member includes a first pressure spring and a second pressure spring, and a sliding base is further provided on the housing, the two ends of the first pressure spring are respectively connected to the sliding base and the front end limit mechanism, one end of the second pressure spring is connected to the screw rod, and the other end is connected to the sliding base through a rotating assembly; The rotating assembly includes a bearing, and the second pressure spring is rotatably connected to the sliding base through the bearing; The housing is provided with a slide rail, and the slide base is connected to the slide rail via a slide platform.

2. The linear motion energy storage mechanism according to claim 1, characterized in that: The rotating assembly also includes a bearing end cover and an anti-dropout pin, the bearing end cover is fixed to the sliding base through the anti-dropout pin, and the second pressure spring is connected to the bearing through the bearing end cover.

3. The linear motion energy storage mechanism according to claim 1, characterized in that: The bearing is a needle roller bearing.

4. The linear motion energy storage mechanism according to claim 1, characterized in that: A fixing block is fixed to the front end of the screw rod, and the rear end of the second pressure spring is fixedly connected to the fixing block.

5. The linear motion energy storage mechanism according to claim 1, characterized in that: The locking mechanism is a clutch.

6. The linear motion energy storage mechanism according to claim 1, characterized in that: The driving mechanism is a rotary motor.

7. The linear motion energy storage mechanism according to claim 1, characterized in that: The screw rod is a ball screw rod.

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