TWM570777U - Recessed drive shaft for power tools - Google Patents

Abstract

The present invention is a recessed transmission shaft suitable for a power tool, which includes a power tool, a transmission shaft, and a sleeve. The transmission shaft is installed in the sleeve, and a groove is recessed on the transmission shaft. A combination post is protruded, and the sleeve is inserted into the groove through the combination post, so that the sleeve is combined with the drive shaft; the position where the sleeve is combined with the drive shaft is located in the power tool, so that the sleeve is exposed outside the power tool The length of the part is shortened, so that the power tool can be used in a narrow working environment after being combined with the sleeve.

Description

Recessed drive shaft for power tools

The invention relates to the technical field of power tools, in particular to a recessed drive shaft suitable for power tools.

Please refer to FIG. 1, which is an exploded view of a general power tool set 10, which mainly includes a power tool 11 and a sleeve 12. The power tool 11 has a main shaft 111 protruding along a lateral direction X. The sleeve 12 is There is a combined section 121 and a working section 122 connected together. The combined section 121 is recessed with a groove 123, the groove 123 is sleeved on the main shaft 111, and the working section 122 is provided for contact with the workpiece. .

However, after the power tool 11 is combined with the sleeve 12, the combined section 121 and the working section 122 of the sleeve 12 are both located outside the power tool 11, resulting in the total length of the power tool 11 after being combined with the sleeve 12. In a narrow working environment, the power tool 11 may not be able to reach the working position after the sleeve 12 is assembled, resulting in difficulty in operation.

In order that the power tool 11 can still work in a narrow working environment after the combination sleeve 12, the problem of the present invention is to provide a recessed drive shaft suitable for the power tool to solve the power tool 11 in the combination sleeve. The length of the barrel 12 is too long.

The purpose of the present invention is to solve the problem that the length of the power tool combined with the sleeve is too long, and then the power tool can be used in a narrow working environment after the sleeve is combined.

In order to solve the foregoing deficiency, the present invention is a recessed drive shaft suitable for a power tool, which is suitable for a power tool. The power tool has a receiving chamber, the receiving chamber has an opening connected to the power tool, Concave drive shaft containing:

A transmission shaft is installed in the container. The transmission shaft has a transmission section and a connection section. The direction of the transmission section extending to the connection section is a horizontal direction. A power source, the connecting section has a groove which is open from the lateral direction; and

A sleeve has a binding post for extending into the opening and being inserted into the groove.

The recessed transmission shaft suitable for a power tool as described in claim 1, wherein the inner surface is provided with a plurality of sequentially arranged internal teeth, and the surface is provided with a plurality of sequentially arranged external teeth. When the binding post is inserted into the groove, the sleeve can be stably locked in the groove by engaging the inner teeth and the outer teeth.

The recessed drive shaft suitable for a power tool as described in claim 1, wherein the shape of the groove is a square hole, and the shape of the combination post is a square post, and two positioning holes are recessed on the surface, and Two springs and two positioning beads, the two springs are respectively installed in the two positioning holes, so that one end of the two springs abuts against the bottom surface of the two positioning holes, and the two positioning beads are respectively installed in the two springs. The other end; and a plurality of bead grooves are recessed on the inner surface. When the combination post is inserted into the groove, the two positioning beads are pushed by the two springs to position the two positioning beads respectively. Two of the bead grooves allow the sleeve to be firmly locked in the groove.

The recessed transmission shaft suitable for a power tool as described in claim 1, wherein the ring on the coupling post is provided with a ring recess, and a pressing ring is embedded in the ring recess. The pressing ring is made of elastic material It is made so that the pressing ring can be tightly attached to the inner surface of the ring recess after being plugged in the groove, so that the sleeve is tightly combined in the groove.

The recessed transmission shaft suitable for a power tool as described in claim 1, wherein the combining post is a hexagonal post, and the combining post has a plurality of bending angles, and each of the bending angles is recessed with an embedded groove. The position of each of the inserting grooves is opposite, so that each of the inserting grooves is in the shape of a ring, and the inner surface is provided with a ring groove in a ring shape, and a C-shaped ring is clamped in the ring groove. When inserted into the groove, the C-ring can be clamped to each of the recesses, thereby making it difficult for the sleeve to come out of the groove.

As a result, the coupling column of the sleeve extends into the container, and the working section of the sleeve is located outside the container. The sleeve is firmly connected to the drive shaft, and only the sleeve is located outside the power tool. The working section of the barrel shortens the overall length of the power tool after the sleeve is installed, thereby enabling the power tool to extend into a narrow working environment.

Please refer to FIG. 2 to FIG. 9. The present invention is a recessed transmission shaft suitable for a power tool. The recessed drive shaft suitable for power tools includes:

A transmission shaft 30 is installed in the accommodating chamber 21. The transmission shaft 30 has a transmission section 31 and a connection section 32 connected together. The direction in which the transmission section 31 extends to the connection section 32 is a lateral direction X. The driving section 31 is used to connect a power source of the power tool 20, the connecting section 32 has a groove 321, which is opened from the lateral direction X, and the groove 321 has an inner surface 301 surrounding it; and

A sleeve 40 has a working section 41 and a combining post 42 for connecting with a workpiece, and the combining post 42 extends from one end surface of the working section 41 along the transverse direction X. The combining post 42 has a surface 421, and the combining post 42 is inserted into the groove 321.

Please refer to FIG. 2 and FIG. 3. In this embodiment, the inner surface 301 is provided with a plurality of sequentially arranged internal teeth A1, and the surface 421 is provided with a plurality of sequentially arranged external teeth A2. When the post 42 is inserted into the groove 321, the inner teeth A1 and the outer teeth A2 are engaged, so that the sleeve 40 can be firmly locked in the groove 321.

Please refer to FIG. 4 and FIG. 5. In another embodiment, the shape of the groove 321 is a square hole B1, and the shape of the coupling post 42 is a square post B2. Two positioning holes 43 are recessed on the surface 421. It also has two springs 50 and two positioning beads 60. The two springs 50 are respectively installed in the two positioning holes 43 such that one end of the two springs 50 abuts against the bottom surface of the two positioning holes 43. The two positioning beads 60 Are respectively installed on the other ends of the two springs 50; and the inner surface 301 is recessed with a plurality of bead grooves 33, and when the combining post 42 is inserted into the groove 321, the two springs 50 The two positioning beads 60 are pushed against, so that the two positioning beads 60 are respectively positioned in two of the bead grooves 33, so that the sleeve 40 can be firmly locked in the groove 321.

Please refer to FIG. 6 and FIG. 7. In yet another embodiment, a ring recess 44 is provided on the ring of the coupling post 42, and a pressing ring 70 is embedded in the ring recess 44. The pressing ring 70 is elastic. Made of material, the pressing ring 70 can be tightly attached to the inner surface 301 of the groove 321 after being plugged in the groove 321, so that the sleeve 40 can be tightly combined in the groove 321.

Please refer to FIG. 8 and FIG. 9. In yet another embodiment, the combining post 42 is a hexagonal post C1, and the combining post 42 has a plurality of bending angles C2. Each of the bending angles C2 is recessed with an insert. Slots 45, each of which is positioned opposite to each other, so that each of the inset grooves 45 surrounds an annular shape, the inner surface 301 is annularly recessed with a ring groove 34, and a C-shaped ring 80 is locked in the ring In the ring groove 34, the C-ring 80 can be locked in each of the inserting grooves 45 when the combining post 42 is inserted into the groove 321, thereby preventing the sleeve 40 from coming out of the groove 321 easily.

The above is the structure configuration and connection relationship of the new model. The use of the new model is as follows:

Please refer to FIGS. 2 to 9, when a user inserts the coupling post 42 of the sleeve 40 into the groove 321, the coupling post 42 is locked in the groove 321, and the coupling of the sleeve 40 The post 42 extends into the accommodation chamber 21, and the working section 41 of the sleeve 40 is located outside the accommodation chamber 21. The sleeve 40 is firmly connected to the transmission shaft 30. The working section 41 of the sleeve 40 shortens the overall length of the power tool 20 after the sleeve 40 is installed, so that the power tool 20 can extend into a narrow working environment.

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10‧‧‧Power Tools

11‧‧‧Power Tools

111‧‧‧ Spindle

12‧‧‧ sleeve

121‧‧‧Combination section

122‧‧‧Working section

123‧‧‧Groove

X‧‧‧Horizontal

The new model

20‧‧‧Power Tools

21‧‧‧Room

22‧‧‧ opening

30‧‧‧Drive shaft

301‧‧‧ inside

31‧‧‧Drive section

32‧‧‧ connecting section

321‧‧‧groove

33‧‧‧bead trough

34‧‧‧ ring groove

40‧‧‧ sleeve

41‧‧‧Working section

42‧‧‧combination column

421‧‧‧ surface

43‧‧‧ positioning hole

44‧‧‧ Ring Concave

45‧‧‧ Recessed

50‧‧‧ spring

60‧‧‧Positioning Beads

70‧‧‧ Urgent ring

80‧‧‧C ring

A1‧‧‧Inner teeth

A2‧‧‧External teeth

B1‧‧‧square hole

B2‧‧‧ Square Post

C1‧‧‧Hexagonal Post

C2‧‧‧ bending angle

X‧‧‧Horizontal

Figure 1 is an exploded view of a conventional power tool and sleeve. FIG. 2 is an exploded view of the present invention in a preferred embodiment. FIG. 3 is a sectional view of a combination of the present invention in a preferred embodiment. FIG. 4 is an exploded view of the present invention in another preferred embodiment. FIG. 5 is a sectional view of a combination of the present invention in another preferred embodiment. FIG. 6 is an exploded view of the present invention in another preferred embodiment. FIG. 7 is a sectional view of a combination of the present invention in another preferred embodiment. FIG. 8 is an exploded view of the present invention in yet another preferred embodiment. FIG. 9 is a sectional view of a combination of the present invention in yet another preferred embodiment.

Claims (5)

A recessed transmission shaft suitable for a power tool is suitable for a power tool. The power tool has a receiving chamber having an opening in communication, and the recessed transmission shaft suitable for a power tool includes: a transmission A shaft is installed in the container. The transmission shaft has a transmission section and a connection section that are connected to each other. The direction in which the transmission section extends to the connection section is a horizontal direction. The transmission section is used to connect the power of the power tool. The source, the connecting section has a groove, the groove is open from the transverse direction; and a sleeve, with a combination post for extending into the opening and inserted into the groove. The recessed transmission shaft suitable for a power tool according to claim 1, wherein the groove has a surrounding inner surface, the coupling post has a surface, and the inner surface is provided with a plurality of sequentially arranged internal teeth. The surface is provided with a plurality of external teeth arranged in sequence. When the combination post is inserted into the groove, the internal teeth and the external teeth mesh with each other. The recessed transmission shaft suitable for a power tool according to claim 1, wherein the shape of the groove is a square hole, and the shape of the combination post is a square column, the combination post has a surface, and the surface is recessed. There are two positioning holes, and two springs and two positioning beads, the two springs are respectively installed in the two positioning holes, so that one end of the two springs abuts against the bottom surface of the two positioning holes, and the two positioning beads are respectively The groove is provided at the other end of the two springs; the groove has a surrounding inner surface, and the inner surface is concavely provided with a plurality of bead grooves; when the combining post is inserted into the groove, the two springs Push the two positioning beads, so that the two positioning beads are respectively positioned in two of the bead grooves. The recessed transmission shaft suitable for a power tool according to claim 1, wherein the groove has an inner surface that surrounds, a ring recess is provided on the ring of the combination post, and a pressing ring is embedded in the ring recess. The pressing ring is made of an elastic material, so that the pressing ring can be tightly attached to the inner surface of the groove after being plugged in the groove. The recessed transmission shaft suitable for a power tool according to claim 1, wherein the groove has an inner surface that surrounds, the combination post is a hexagonal post, and the combination post has a plurality of bending angles, each A recessed groove is recessed on each of the bending angles, and each of the recessed grooves is positioned opposite to each other, so that each recessed groove is annular, and the inner surface is recessed with a ring groove and a C-shaped ring card. It is made in the ring groove, and when the combination post is inserted into the groove, the C-shaped ring can be locked in each of the embedded grooves.