Anti-scalding sleeve for replacing saw blade of electric reciprocating saw

Abstract

The utility model belongs to the technical field of electric reciprocating saws, and particularly relates to an anti-scalding sleeve for replacement of a saw blade of an electric reciprocating saw. The anti-scalding sleeve for replacing the saw blade of the electric reciprocating saw comprises a rubber sleeve body, a sleeve body and a sleeve body, the side face of the rubber sleeve body protrudes to form a twisting protruding part. A limiting clamping groove extending into the twisting protruding part is formed in the inner wall of the rubber sleeve body so that the limiting clamping groove can be clamped with a protrusion on the locking cam. According to the anti-scalding sleeve for replacing the saw blade of the electric reciprocating saw, the saw blade through hole is formed in the front end of the rubber sleeve body, the twisting convex part is formed on the side face of the rubber sleeve body in a protruding mode and can be used for being provided with a limiting clamping groove extending into the twisting convex part, and therefore the rubber sleeve body can be tightly arranged on a locking cam of the saw blade of the electric reciprocating saw in a sleeving mode; and when the rubber sleeve body is twisted, the rubber sleeve body cannot be scalded.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric reciprocating saws, and particularly relates to a heat insulation sleeve for replacing a saw blade of an electric reciprocating saw. Background Art

[0002] An electric reciprocating saw is a type of electric saw that is smaller in volume than an electric chain saw and is more suitable for the decoration and general furniture industries.

[0003] The working principle of an electric reciprocating saw is that a reciprocating rod is slidably arranged in a front support and a rear support. The front end of the reciprocating rod extends outside the machine shell, and a saw blade quick-change assembly is provided at the front end for quickly replacing a vulnerable saw blade. The middle part of the reciprocating rod is connected to a crank-slider mechanism to drive the reciprocating rod and the saw blade to reciprocate.

[0004] The saw blade quick-change assembly of the existing electric reciprocating saw does not consider the heat generated by the friction of the reciprocating rod reciprocating in the front support and the rear support, and the heat generated by the friction of the saw blade reciprocating in the workpiece. This heat will be transmitted to the saw blade quick-change assembly, especially the locking cam, through the metal reciprocating rod and saw blade. For example, in a reciprocating saw chuck device and a reciprocating saw with the publication (announcement) number CN206356659U, the clamping mechanism of the saw blade loosens and clamps the saw blade by rotating the outer ring of the chuck (equivalent to the locking cam). Generally, when replacing the saw blade, it is after the electric reciprocating saw has been working for a period of time. At this time, the heat generated by the friction of the reciprocating rod and the heat generated by the friction of the saw blade have been transmitted to the locking cam. Directly twisting the locking cam by hand is very likely to be scalded by the metal locking cam.

[0005] Therefore, this application proposes a heat insulation sleeve for replacing a saw blade of an electric reciprocating saw to make up for the above deficiencies of the existing electric reciprocating saw. Content of the Utility Model

[0006] The purpose of the utility model is to provide a heat insulation sleeve for replacing a saw blade of an electric reciprocating saw to solve the technical problem that when a user needs to replace the saw blade during the sawing operation of the current electric reciprocating saw, the user will be scalded by the saw blade quick-change assembly.

[0007] To solve the above technical problem, the utility model provides a heat insulation sleeve for replacing a saw blade of an electric reciprocating saw, including: a rubber sleeve body, with a saw blade through-hole opened at its front end; the side surface of the rubber sleeve body bulges to form a twisting convex part; a limiting card slot extending into the twisting convex part is opened on the inner wall of the rubber sleeve body to be stuck with a protrusion on the locking cam.

[0008] Furthermore, the twisting convex part extends to the rear end of the rubber sleeve body, and a guiding inclined slot separated from the limiting card slot is opened at the rear end of the twisting convex part; the slot width of the guiding inclined slot is adapted to the width of the protrusion on the locking cam, and the guiding inclined slot is aligned with the limiting card slot.

[0009] Furthermore, the front end of the rubber sleeve body converges inward to form a limiting clamping platform, so that when the limiting clamping groove is stuck with the protrusion on the locking cam, the limiting clamping platform wraps the front end of the locking cam.

[0010] Furthermore, a chamfer is formed on the outer surface of the limiting clamping platform.

[0011] Furthermore, chamfers are formed at the front end and both sides of the twisting convex part.

[0012] Furthermore, a plurality of twisting grooves are evenly formed on the side surface of the rubber sleeve body, and the rear end of the twisting groove is spaced from the rear end of the rubber sleeve body.

[0013] Furthermore, the front end of the twisting groove extends to the front end of the rubber sleeve body.

[0014] Furthermore, the depth of the twisting groove is 0.15 mm to 0.25 mm.

[0015] Furthermore, a chamfer is formed at the rear end of the twisting groove.

[0016] The beneficial effect of the present utility model is that the present utility model aims to solve the technical problem that when the saw blade needs to be replaced during the sawing operation of the current electric reciprocating saw, the user will be scalded by the saw blade quick-change assembly. For the anti-scald sleeve for replacing the saw blade of the present electric reciprocating saw, a saw blade through hole is formed at the front end of the rubber sleeve body, and a twisting convex part is formed by the side surface of the rubber sleeve body bulging, which can be used to form a limiting clamping groove extending into the twisting convex part. Thus, the rubber sleeve body can be sleeved tightly on the locking cam of the saw blade of the electric reciprocating saw. When the user needs to replace the saw blade, only the rubber sleeve body with poor heat conduction ability will be touched, and the user will not be scalded when twisting the rubber sleeve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the specific embodiments or the prior description. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic diagram of the cooperation between the anti-scald sleeve for replacing the saw blade of the electric reciprocating saw of the present utility model and the locking cam Figure 1 ;

[0019] Figure 2 is a schematic diagram of the cooperation between the anti-scald sleeve for replacing the saw blade of the electric reciprocating saw of the present utility model and the locking cam Figure 2 ;

[0020] Figure 3It is a schematic structural diagram of the anti-scald sleeve for replacing the saw blade of the electric reciprocating saw of the present utility model;

[0021] In the figure:

[0022] Rubber sleeve body 100, guiding inclined groove 110, limiting clamping platform 120, chamfer of the clamping platform 121, screwing groove 130, chamfer of the groove 131

[0023] Saw blade through hole 200,

[0024] Screwing protrusion 300, screwing chamfer 310,

[0025] Limiting clamping groove 400,

[0026] Protrusion 510 on the locking cam. Specific implementation mode

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment

[0029] As Figure 1 shown, the present utility model provides an anti-scald sleeve for replacing the saw blade of an electric reciprocating saw, including: a rubber sleeve body 100, with a saw blade through hole 200 opened at its front end; the side surface of the rubber sleeve body 100 bulges to form a screwing protrusion 300; in combination with Figure 2 , a limiting clamping groove 400 extending into the screwing protrusion 300 is opened on the inner wall of the rubber sleeve body 100 to be clamped with the protrusion 510 on the locking cam.

[0030] For this anti-scald sleeve for replacing the saw blade of the electric reciprocating saw, a saw blade through hole 200 is opened at the front end of the rubber sleeve body 100, and the side surface of the rubber sleeve body 100 bulges to form a screwing protrusion 300, and a limiting clamping groove 400 extending into the screwing protrusion 300 can be opened, so that the rubber sleeve body 100 can be tightly sleeved on the locking cam of the saw blade of the electric reciprocating saw. When the user needs to replace the saw blade, only the rubber sleeve body 100 with poor heat conduction ability will be touched, and the user will not be scalded when screwing the rubber sleeve body 100.

[0031] As Figure 2As shown, the twisting protrusion 300 extends to the rear end of the rubber sleeve body 100, and a guiding inclined groove 110 separated from the limiting card slot 400 is formed at the rear end of the twisting protrusion 300; the groove width of the guiding inclined groove 110 is adapted to the width of the protrusion on the locking cam, and the guiding inclined groove 110 is aligned with the limiting card slot 400. By extending the twisting protrusion 300 to the rear end of the rubber sleeve body 100, the guiding inclined groove 110 formed at the rear end of the twisting protrusion 300 can guide when the anti-scald sleeve for the saw blade of this electric reciprocating saw is sleeved onto the locking cam. When sleeving, as long as the guiding inclined groove 110 is first aligned with the protrusion 510 on the locking cam, and then the rubber sleeve body 100 is pressed into the locking cam, it can be ensured that the limiting card slot 400 is exactly sleeved onto the protrusion 510 on the locking cam, avoiding the situation during sleeving that due to misalignment, the protrusion 510 on the locking cam propping up the part of the rubber sleeve body 100 where the limiting card slot 400 is not opened, making it difficult to rotate the tightly wrapped rubber sleeve body 100.

[0032] As Figure 3 shown, the front end of the rubber sleeve body 100 converges inward to form a limiting card table 120, so that when the limiting card slot 400 is stuck with the protrusion on the locking cam, the limiting card table 120 wraps the front end of the locking cam. At the same time, for the convenience of sleeving, the rear end of the rubber sleeve body 100 is not provided with a wrapping structure.

[0033] As Figure 3 shown, a card table chamfer 121 is formed on the outer surface of the limiting card table 120.

[0034] As Figure 3 shown, twisting chamfers 310 are formed at the front end and both sides of the twisting protrusion 300.

[0035] As Figure 3 shown, a plurality of twisting grooves 130 are evenly formed on the side surface of the rubber sleeve body 100, and the rear end of the twisting grooves 130 is spaced apart from the rear end of the rubber sleeve body 100. In at least one embodiment, there are two twisting protrusions 300, the included angle between them is 180°, and the twisting grooves 130 are evenly formed between the two twisting protrusions 300.

[0036] As Figure 3 shown, the front end of the twisting groove 130 extends to the front end of the rubber sleeve body 100.

[0037] In at least one embodiment, referring to Figure 3, the front end of the rubber sleeve body 100 converges inward to form a limiting clamping platform 120. The front end and both sides of the twisting protrusion 300 are provided with twisting chamfers 310. A number of twisting grooves 130 are evenly opened on the side surface of the rubber sleeve body 100, and the rear end of the twisting groove 130 is spaced apart from the rear end of the rubber sleeve body 100. The front end of the twisting groove 130 extends to the front end of the rubber sleeve body 100. Spacing the rear end of the twisting groove 130 from the rear end of the rubber sleeve body 100 and extending the front end of the twisting groove 130 to the front end of the rubber sleeve body 100, and only the front end and both sides of the twisting protrusion 300 are provided with twisting chamfers 310. When the user is guided to see the anti-scald sleeve for replacing the saw blade of this electric reciprocating saw sleeved on the locking cam, the front part of the rubber sleeve body 100 is preferably touched. The front end of the rubber sleeve body 100 converges inward and has a limiting clamping platform 120 that wraps the front end of the locking cam, and the user's fingers are not easily in contact with the hot locking cam.

[0038] The groove depth of the twisting groove 130 is 0.15 mm to 0.25 mm. This groove depth can provide friction while ensuring that the height difference between the groove bottom and the surface of the rubber sleeve body 100 is not too large to cause a strong sense of drop after the hand touches it, and can reduce the tingling sensation caused by unevenness during twisting. In at least one embodiment, the groove depth is 0.2 mm.

[0039] As Figure 3 shown, a groove chamfer 131 may be opened at the rear end of the twisting groove 130.

[0040] In summary, for the anti-scald sleeve for replacing the saw blade of the electric reciprocating saw provided by the present invention, a saw blade through hole 200 is opened at the front end of the rubber sleeve body 100. A twisting protrusion 300 is formed by the side surface of the rubber sleeve body 100 bulging, and a limiting card slot 400 extending into the twisting protrusion 300 can be opened. Thus, the rubber sleeve body 100 can be sleeved tightly on the locking cam of the saw blade of the electric reciprocating saw. When the user needs to replace the saw blade, only the rubber sleeve body 100 with poor heat conduction ability will be touched. When twisting the rubber sleeve body 100, it will not be scalded. And the anti-scald sleeve for replacing the saw blade of this electric reciprocating saw can ensure that the limiting card slot 400 is just sleeved on the protrusion 510 on the locking cam by aligning the guiding inclined groove 110 with the protrusion 510 on the locking cam first and then pressing the rubber sleeve body 100 onto the locking cam when sleeving. At the same time, the anti-scald sleeve for replacing the saw blade of this electric reciprocating saw can guide the user to preferably touch the front part of the rubber sleeve body 100 with a limiting clamping platform 120 that wraps the front end of the locking cam, and the user's fingers are not easily in contact with the hot locking cam.

[0041] In the embodiments provided in the present application, it should be understood that the disclosed systems and devices can be implemented in other ways. The embodiments described above are only illustrative. For example, the division of the mechanism is only a logical function division, and there may be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 therefore should not be construed as a limitation to the present invention.

[0043] Taking the above ideal embodiments of the present invention as an inspiration, through the above description, those skilled in the relevant art can make various changes and modifications completely within the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. An anti-scald sleeve for replacing the saw blade of an electric reciprocating saw, characterized in that, Comprising: A rubber sleeve body (100) with a saw blade through-hole (200) opened at its front end; The side surface of the rubber sleeve body (100) bulges to form a twisting convex part (300); A limiting card slot (400) extending into the twisting convex part (300) is opened on the inner wall of the rubber sleeve body (100) to engage with the protrusion on the locking cam.

2. The anti-scald sleeve for replacing the saw blade of an electric reciprocating saw according to claim 1, characterized in that The twisting convex part (300) extends to the rear end of the rubber sleeve body (100), and a guiding inclined slot (110) separated from the limiting card slot (400) is opened at the rear end of the twisting convex part (300); The slot width of the guiding inclined slot (110) is adapted to the width of the protrusion on the locking cam, and the guiding inclined slot (110) is aligned with the limiting card slot (400).

3. The anti-scald sleeve for replacing the saw blade of an electric reciprocating saw according to claim 1, characterized in that The front end of the rubber sleeve body (100) converges inward to form a limiting card platform (120) so that when the limiting card slot (400) engages with the protrusion on the locking cam, the limiting card platform (120) wraps around the front end of the locking cam.

4. The anti-scald sleeve for replacing the saw blade of an electric reciprocating saw according to claim 3, characterized in that A card platform chamfer (121) is opened on the outer surface of the limiting card platform (120).

5. The anti-scald sleeve for replacing the saw blade of an electric reciprocating saw according to claim 1, characterized in that Twisting chamfers (310) are opened at the front end and both sides of the twisting convex part (300).

6. The anti-scald sleeve for replacing the saw blade of an electric reciprocating saw according to claim 1, characterized in that A plurality of twisting grooves (130) are evenly opened on the side surface of the rubber sleeve body (100), and the rear end of the twisting grooves (130) is spaced from the rear end of the rubber sleeve body (100).

7. The anti-scald sleeve for replacing the saw blade of an electric reciprocating saw according to claim 6, characterized in that The front end of the twisting groove (130) extends to the front end of the rubber sleeve body (100).

8. The anti-scald sleeve for replacing the saw blade of an electric reciprocating saw according to claim 6, characterized in that The groove depth of the twisting groove (130) is 0.15 mm to 0.25 mm.

9. The anti-scald sleeve for replacing the saw blade of an electric reciprocating saw according to claim 6, characterized in that A groove chamfer (131) is opened at the rear end of the twisting groove (130).

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