A shock-absorbing structure for a lithium-ion battery-powered single-handed reciprocating saw housing

Abstract

This invention relates to the field of power tool technology, specifically to a vibration damping structure for a lithium-ion battery-powered single-handed reciprocating saw. The structure includes a reciprocating saw handle, a reciprocating saw housing fixed to one side of the saw, and a reciprocating saw drive connection end fixed to the right end of the housing. A gearbox body for the reciprocating saw drive connection is separately connected and fixed to the upper side of the housing. An elastic connection unit is provided between the gearbox body and the housing. This elastic connection unit is used to transmit the vibration force generated between the gearbox body and the housing during operation. By adding an elastic element between the housing and the gearbox to connect and fix them, instead of the current conventional direct rigid connection, the vibration transmitted from the gearbox (vibration source) to the housing is fundamentally reduced, improving the user's handling experience when using a single-handed reciprocating saw.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, and in particular to a housing vibration damping structure for a lithium-ion battery-powered single-handed reciprocating saw. Background Technology

[0002] Vibration damping performance is an important performance indicator for power tools like single-handed reciprocating saws, which experience significant vibrations under various working conditions. When operating a lithium-ion battery-powered single-handed reciprocating saw, the user needs to hold the handle area of ​​the casing for extended periods. The vibration generated during prolonged operation affects the structural reliability of the machine and is continuously transmitted to the user's hand through the handle components, resulting in a poor user experience and hand fatigue.

[0003] In the existing technology, soft rubber is added to the handle area and the auxiliary grip area at the front of the reciprocating saw to improve the vibration of the grip area, thereby reducing the impact of poor user experience caused by the vibration of the whole machine;

[0004] This method has the following drawbacks:

[0005] 1. Adding shock-absorbing rubber only to the grip area of ​​the reciprocating saw can only improve the user experience to a small extent. As for the entire casing itself, vibration in the grip area still exists and will still affect the user's handling.

[0006] 2. The left and right housings are fixed to the gearbox by fixing the gearbox body with ribs inside the housing and then locking it with screws. Therefore, the left and right housings and the gearbox are in rigid contact. When the whole machine is running, the vibration is directly transmitted to the housing through the gearbox body. As a result, the vibration of the housing is also relatively severe, which affects the reliability of the whole machine. For example, the plastic housing may crack due to fatigue due to long-term vibration, abnormal noise caused by vibration, and structural damage to the internal components of the whole machine.

[0007] Therefore, a housing vibration reduction structure is proposed to facilitate single-handed reciprocating sawing with lithium batteries. Summary of the Invention

[0008] The purpose of this invention is to provide a housing shock absorption structure for a lithium-ion battery-powered single-handed reciprocating saw, in order to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a housing shock absorption structure for a lithium battery single-hand reciprocating saw, comprising a reciprocating saw handle, a reciprocating saw housing fixed to one side of the reciprocating saw, and a reciprocating saw drive connection end fixed to the right end of the reciprocating saw housing;

[0010] The upper side of the reciprocating saw housing is fixed with a gearbox body used for the reciprocating saw drive connection;

[0011] An elastic connection unit is provided between the gearbox body and the reciprocating saw housing;

[0012] The elastic connection unit is used during the operation of the gearbox body to further buffer and reduce the vibration transmission force generated between the gearbox body and the reciprocating saw housing during operation, thereby reducing damage at the connection between the gearbox body and the reciprocating saw housing and the fatigue of the reciprocating saw handle connected to the reciprocating saw housing after vibration transmission.

[0013] Preferably, the reciprocating saw housing comprises a left housing and a right housing.

[0014] Preferably, the elastic connection unit comprises a connection node connecting the reciprocating saw housing and the gearbox body, and an elastic damping unit for connecting the connection node. The elastic connection unit realizes a flexible connection between the gearbox body and the reciprocating saw housing, thereby achieving buffering and shock absorption.

[0015] Preferably, the connection node includes an integrally connected collar fixed to the outside of the gearbox body, and the collar has a built-in circular groove.

[0016] Preferably, a connecting ear plate is integrally connected to the outer side of the reciprocating saw housing at a position corresponding to the collar, and an elastic element is built into the groove, the elastic element being located between the collar and the connecting ear plate.

[0017] Preferably, the elastic element includes a ring-shaped shock-absorbing pad, and the shock-absorbing pad is made of rubber.

[0018] Preferably, the number of connection nodes is three groups, and the three groups of connection nodes are designed in a triangular structure.

[0019] Preferably, the connection node includes a collar fixed to the lower side of the gearbox body and a fixed waist-shaped column fixed to the left side of the gearbox body.

[0020] Preferably, the left and right shells are fixedly connected to the corresponding positions of the collar with protruding columns, and triangular limiting blocks are distributed in a ring on the outer side of the protruding columns. The triangular limiting blocks are integrally connected to the protruding columns, and the outer side of the protruding columns is fitted with shock-absorbing pads that match the triangular limiting blocks.

[0021] Preferably, the left side of the fixed waist-shaped column is integrally connected with a convex edge structure, and the reciprocating saw housing is provided with a hole that matches the convex edge structure at the corresponding position. The fixed waist-shaped column is fitted with a rubber sleeve, and two sets of housing limiting ribs that fit and abut against the outer side of the rubber sleeve are distributed.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. By adding an elastic element between the machine housing and the gearbox to connect and fix them instead of the current conventional direct rigid connection, the vibration transmitted from the gearbox (vibration source) to the machine housing is significantly reduced, thereby improving the user's hand feel when using a single-handed reciprocating saw.

[0024] 2. The elastic elements added around the connection between the left and right housings and the gearbox housing, which are in interference fit with the gearbox, can effectively buffer the displacement of the gearbox caused by its own vibration and prevent it from hitting the housing.

[0025] 3. By placing both the transmission system (gear system, etc.) and the drive system (motor system), which both generate vibration, into a single gearbox, the machine housing can be elastically connected to the gearbox, thus ensuring that the machine housing is elastically connected to all vibrating components. Currently, the conventional structure of a single-handed reciprocating saw typically places only the transmission system in the gearbox, while the motor system remains in direct contact with the machine housing. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is an overall structural view of the present invention;

[0028] Figure 2 This is a diagram of the gearbox connection nodes in Embodiment 1 of the present invention;

[0029] Figure 3 This is a diagram of the gearbox connection nodes in Embodiment 2 of the present invention;

[0030] Figure 4 This is a schematic diagram showing the combination of the reciprocating saw housing and the boss column of the present invention;

[0031] Figure 5 This is a structural view of the reciprocating saw housing, boss, and elastic element of the present invention;

[0032] Figure 6 This is a structural view of the fixed waist-shaped column, rubber sleeve, and housing limiting rib of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Reciprocating saw handle; 2. Gearbox body; 3. Reciprocating saw housing; 31. Left housing; 32. Right housing; 4. Reciprocating saw drive connection end; 5. Gearbox connecting collar; 6. Fixed waist-shaped column; 7. Boss column; 8. Triangular limit block; 9. Elastic damping unit. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1 to 6 The technical solution provided by this invention:

[0037] Example 1:

[0038] A housing shock absorption structure for a lithium-ion battery-powered single-handed reciprocating saw includes a reciprocating saw handle 1, a reciprocating saw housing 3 fixed to one side of the reciprocating saw, and a reciprocating saw drive connection end 4 fixed to the right end of the reciprocating saw housing 3.

[0039] The upper side of the reciprocating saw housing 3 is fixedly connected to the gearbox body 2 used for the reciprocating saw transmission.

[0040] An elastic connection unit is provided between the gearbox body 2 and the reciprocating saw housing 3;

[0041] The elastic connection unit is used during the operation of the gearbox body 2 to further buffer and reduce the vibration transmission force generated between the gearbox body 2 and the reciprocating saw housing 3 during the operation, thereby reducing damage at the connection between the gearbox body 2 and the reciprocating saw housing 3 and the fatigue of the reciprocating saw handle 1 connected to the reciprocating saw housing 3 after vibration transmission.

[0042] The reciprocating saw housing 3 is composed of a left housing 31 and a right housing 32.

[0043] The elastic connection unit comprises a connection node connecting the reciprocating saw housing 3 and the gearbox body 2, and an elastic damping unit 9 for connecting the connection node. The elastic connection unit realizes a flexible connection between the gearbox body 2 and the reciprocating saw housing 3, thereby achieving buffering and shock absorption.

[0044] The connection node includes an integrally connected collar fixed to the outside of the gearbox body 2, and the collar has a built-in circular groove.

[0045] The reciprocating saw housing 3 has a connecting ear plate integrally connected to the collar on the outer side. The groove has an elastic element inside, which is located between the collar and the connecting ear plate.

[0046] The elastic element includes a ring-shaped shock-absorbing pad, which is made of rubber.

[0047] The number of connection nodes is three groups, and the three groups of connection nodes are designed in a triangular structure.

[0048] For implementation scheme one, a structure of full gearbox connecting collar 5 is adopted. There are 3 gearbox connecting collars 5, and the gearbox connecting collars 5 are integrated with the gearbox. The three gearbox connecting collars 5 are placed in a triangular shape, thereby increasing the stability of the connection between the gearbox body 2 and the reciprocating saw housing 3;

[0049] The left and right housings 32 have three protruding posts 7 at their connection points with the gearbox connecting collar 5. Each of the left and right grooves of the gearbox connecting collar 5 contains an elastic element (shock-absorbing pad). When the left and right housings 32 are connected to the gearbox body 2, the protruding posts 7 on the housings are aligned with the corresponding holes on the elastic elements and inserted. This results in a fixed installation where the housing and gearbox are connected and contacted through the elastic elements. This achieves shock absorption by elastically connecting the housing handle to the gearbox, resulting in a better operating feel. Additionally, the addition of soft rubber wrapping in the housing handle area further enhances the shock absorption of the grip area.

[0050] Example 2:

[0051] The connection node includes a collar fixed to the lower side of the gearbox body 2 and a fixed waist-shaped column 6 fixed to the left side of the gearbox body 2.

[0052] The left housing 31 and the right housing 32 are fixedly connected to the corresponding positions of the collar with protruding columns 7, and triangular limiting blocks 8 are distributed in a ring on the outer side of the protruding columns 7. The triangular limiting blocks 8 are integrally connected to the protruding columns 7, and the protruding columns 7 are fitted with shock-absorbing pads that match the triangular limiting blocks.

[0053] The left side of the fixed waist-shaped column 6 is integrally connected with a convex edge structure, and the reciprocating saw housing 3 has a corresponding hole that matches the convex edge structure. The fixed waist-shaped column 6 is externally fitted with a rubber sleeve, and two sets of housing limiting ribs that fit and abut against the outer side of the rubber sleeve are distributed.

[0054] For implementation scheme two, a structure of collar + fixed waist-shaped column 6 is adopted, wherein there is one collar and one fixed waist-shaped column 6. The collar / fixed waist-shaped column 6 and the gearbox are integrated into one structure. The fixed waist-shaped column 6 and the collar are respectively placed on the upper and lower sides of the gearbox, thereby increasing the stability of the connection between the gearbox and the housing.

[0055] For the collar, the fixing and installation method of the collar and the elastic element is exactly the same as in Implementation Scheme 1. For the fixed waist-shaped column 6, the left and right housings are provided with limiting ribs at the connection and matching points with the fixed waist-shaped column 6; an elastic element is wrapped around the fixed waist-shaped column 6, and then pressed and tightened by the limiting ribs on the left and right housings that match the fixed waist-shaped column 6. The width dimension of the fixed waist-shaped column 6 is equal to the diameter of the collar, and its length dimension is at least twice the diameter of the collar. This dimension requirement can ensure the structural reliability of the fixed waist-shaped column 6 as the main positioning component of the gearbox. At the same time, a circumferential protrusion is added to the root of the fixed waist-shaped column 6. This protrusion, together with the limiting ribs on the housing, plays a limiting role in the front and rear directions of the gearbox.

[0056] Elastic elements are added to the area around the connection between the left and right housings and the gearbox housing.

[0057] The elastic elements are installed at the connection areas between the left and right half shells and the gearbox body. The elastic elements are completely fixed to the left and right shells and have an interference fit with the gearbox body, completely covering the circumference connection area between the left and right shells and the gearbox. This buffers the displacement of the gearbox caused by vibration and prevents the gearbox from directly hitting the shell and causing potential damage to the shell.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A housing vibration damping structure for a lithium-ion battery-powered single-handed reciprocating saw, characterized in that: Includes a reciprocating saw handle (1), a reciprocating saw housing (3) fixed on one side of the reciprocating saw, and a reciprocating saw drive connection end (4) fixed on the right end of the reciprocating saw housing (3). The upper side of the reciprocating saw housing (3) is fixed with a gearbox body (2) used for the reciprocating saw transmission connection, and the gearbox body (2) simultaneously accommodates the transmission system and the drive system. An elastic connection unit is provided between the gearbox body (2) and the reciprocating saw housing (3). The elastic connection unit consists of a connection node connecting the reciprocating saw housing (3) and the gearbox body (2) and an elastic damping unit (9) for the connection node. The flexible connection between the gearbox body (2) and the reciprocating saw housing (3) is achieved through the elastic connection unit, thereby achieving buffering and shock absorption. The reciprocating saw housing (3) is composed of a left housing (31) and a right housing (32). The left housing (31) and the right housing (32) are fixedly connected with a boss (7) at the corresponding position of the collar. A triangular limiting block (8) is distributed in a ring on the outside of the boss (7). The triangular limiting block (8) is integrally connected with the boss (7). A shock-absorbing pad matching the triangular limiting block (8) is sleeved on the outside of the boss (7). The connection node includes a collar fixed to the lower side of the gearbox body (2) and a fixed waist-shaped column (6) fixed to the left side of the gearbox body (2); the left side of the fixed waist-shaped column (6) is integrally connected with a convex edge structure, and the reciprocating saw housing (3) is provided with a hole that matches the convex edge structure at the corresponding position. The fixed waist-shaped column (6) is fitted with a rubber sleeve, and two sets of housing limiting ribs that fit and abut against the rubber sleeve are distributed on the outside of the rubber sleeve.

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