TWI789785B - Pulse electric tool transmission and touch stop device - Google Patents

Abstract

The present invention discloses a pulse-type power tool transmission and touch stop device, which is assembled at the front end of a main body, including a casing, a bearing, an electric drive mechanism, and an oil pressure pulse mechanism. The casing includes a front end cover, a shaft section and a rear end cover sequentially connected in series. The bearing is placed in the shaft section. The hydraulic pulse mechanism is housed in the front end cover. The electric drive mechanism is assembled on the shaft section and is connected with the oil pressure pulse mechanism to move simultaneously, including an outer rotor motor and a touch switch. With the composition of the above components, the outer rotor motor is activated by the traction oil pressure pulse mechanism, and the touch switch is triggered by the force fed back by the oil pressure pulse mechanism, so as to disconnect the outer rotor motor from the external power and realize the electric drive mechanism of running and stopping.

Description

Pulse electric tool transmission and touch stop device

The invention relates to the technical field related to electric hand tools, in particular to a pulse type electric tool transmission and touch stop device.

According to the field of tools that can generate impact force, it can be roughly divided into two types: direct impact type and oil pressure pulse type; among them, oil pressure pulse type air tools have the characteristics of durability, long life, etc., and are widely accepted by the industry. favorite.

In order to be able to control the output torque of the oil pressure pulse air tool, the previous technology will design a stop structure inside the tool based on the built-in pressure. When the oil pressure shaft locks the workpiece to the torque setting value, the air release mechanism will be triggered to stop the oil in time. Pressure pulse air tools.

As shown in FIG. 7 , the oil pressure pulse pneumatic tool in the prior art generally includes a main body 91 , and the main body 91 is provided with a wind driving mechanism 92 , an air release mechanism 93 , and an oil pressure pulse mechanism 94 . The wind drive mechanism 92 is driven and rotated by the high-pressure gas introduced from the air inlet by the buckle structure 911 arranged on the main body 91, and the air release mechanism 93 and the oil pressure pulse mechanism 94 are respectively connected to the two ends of the wind drive mechanism 92; When the pulse mechanism 94 is driven and rotated by the wind drive mechanism 92, one of the oil pressure rotating shaft 941 of the oil pressure pulse mechanism 94 is screwed to lock the workpiece (not shown), and the force of the air release mechanism 93 can be fed back by the oil pressure rotating shaft 941 to reach When the torque is at a set value, it is triggered by the oil pressure pulse mechanism 94 to deflate, so that the wind drive mechanism 92 is deflated, and there is not enough pressure to drive the oil pressure pulse mechanism 94.

The above-mentioned oil pressure pulse mechanism 94 generally includes an oil chamber cylinder 942, a container The oil storage cylinder 943 placed in the oil chamber cylinder 942, a front end cover 944 and a rear end cover 945 respectively arranged on the oil storage cylinder 943, have an oil overflow channel that communicates with the oil storage cylinder 943 and each other 945A and a step-type shaft hole 945B, a hydraulic rotating shaft 941 housed in the oil storage cylinder 943 after piercing the front end cover 944, a top check lever 946, one end of which is inserted into the step-type shaft hole 945B, and the other end is inserted into the step-type shaft hole 945B. Corresponding deflation mechanism 93 after stretching wind driving mechanism 92.

When the hydraulic pulse mechanism 94 is in operation, when the hydraulic oil in the oil storage cylinder 943 reaches a preset pressure, it will enter the stepped shaft hole 945B through the oil overflow passage 945A to form a thrust, and further push the top lever 946 Move towards the deflation mechanism 93 to achieve the interaction of triggering deflation.

For the techniques of other relevant oil pressure pulse type pneumatic tools, reference can be made to patent documents such as my country I460055, M430349, I460056.

The oil pressure pulse type pneumatic tools in the prior art use high-pressure gas as the driving force, so the overall equipment needs to be equipped with additional equipment such as air compressors, gas distribution pipes, and pressure stabilizing valves. In addition to occupying space, it also requires The inability to carry and use at will has been a long-term problem in the industry, and the noise during the operation of the air compressor often bothers users and people around them.

In view of the above problems and deficiencies of the prior art, the main purpose of the present invention is to provide a pulse type electric tool drive and touch stop device, which solves the deficiencies of the prior art through innovative structural design.

According to the above-mentioned purpose of the present invention, the present invention proposes a pulse-type power tool transmission and touch stop device, which is assembled at the front end of a main body, including a housing, a bearing, an electric drive mechanism, and an oil pressure pulse mechanism. The casing includes a front end cover, a shaft section and a rear end cover sequentially connected in series. The bearing system is placed in the shaft section. The hydraulic pulse mechanism is housed in the front end cover. The electric drive mechanism is assembled on the shaft section and connected with the oil pressure The pulse mechanism is connected and moves simultaneously, including an outer rotor motor and a touch switch. With the composition of the above components, the outer rotor motor is activated by the traction oil pressure pulse mechanism, and the touch switch is triggered by the force fed back by the oil pressure pulse mechanism, so as to disconnect the outer rotor motor from the external power and realize the electric drive mechanism of running and stopping.

10: shell

11:Front cover

12: axis body

13: rear end cover

121: Assembly Room

122: Palin Room

123: C buckle slot

124: electric drive room

125: contact hole

21: Palin

22: C buckle

41: Outer rotor motor

411: Outer rotor

411A: extension

411B: Barrel section

411C: Buckle section

411D: rotor shaft hole

411E: Stator chamber

411F: button slot

411F': button slot

412: Stator

413: Stator seat

413A: Stator seat body

413B: Stator shaft

413C: Ring

413C': bead groove

413D: Stator shaft hole

414: support

42:Touch switch

43: fan

50: Jam nut

948: first ring plug

949:Second ring plug

B: Partition

<Previous Art>

91: subject

911: Press buckle structure

92:Wind drive mechanism

93: deflated mechanism

94:Oil pressure pulse mechanism

941: hydraulic shaft

942: oil chamber cylinder

943: oil storage cylinder

944: front cover

945: rear end cover

945A: Spillway

945B: stepped shaft hole

946: top lever

947: Elastic parts

[Fig. 1] is a three-dimensional schematic diagram of an embodiment of the present invention.

[Fig. 2] is a schematic cross-sectional view of the partial components of the embodiment shown in Fig. 1.

[Fig. 3] is an exploded schematic view of the partial components of the embodiment shown in Fig. 1.

[Fig. 4] is an exploded schematic view of the partial components of the embodiment shown in Fig. 3.

〔Fig. 5〕 is a schematic view of the cross section of the embodiment shown in Fig. 2.

[Fig. 6] is a partial cross-sectional schematic view of another embodiment of the present invention.

[Fig. 7] is a schematic cross-sectional view of the prior art.

Hereinafter, please refer to the related drawings to further describe the embodiment of the pulse type electric tool transmission and touch stop device of the present invention. Various objects in the embodiments are drawn according to the proportions, sizes, deformations or displacements applicable to the description, rather than drawn according to the scale of the actual components, and are described first. And the elements with the same and symmetrical configurations in the remaining embodiments are denoted by the same numbers. In addition, directional terms such as "front, back, left, right, up, down, inside, outside" in the descriptions of the embodiments listed below are expressed in accordance with the specified viewing directions and cannot be interpreted as limitations of the present invention.

Please refer to Figs. 1 to 6, the pulse-type power tool transmission and touch stop device of the present invention is combined with an oil pressure pulse mechanism 94 for interaction, which includes a housing 10, a bearing 21, a C button 22, An electric drive mechanism, and a tight nut 50.

The above-mentioned housing 10 is assembled in a main body 91, including serially connected A front end cover 11 , a shaft section 12 and a rear end cover 13 . During implementation, the main body 91 can be the outline of a gun-shaped handle or a barrel-shaped handle (previous art, not shown in the figure).

The shaft body section 12 has a set of connection chambers 121 , a bearing chamber 122 , a C buckle groove 123 , an electric drive chamber 124 , and a connecting hole 125 .

The aforesaid assembly chamber 121 and bearing chamber 122 are concentrically connected and formed in a truncated surface of one end of the shaft section 12, and match the partial outer contour of one end of the front end cover 11, and are assembled at one end of the front end cover 11. During implementation, the connection between the assembly chamber 121 and the front end cover 11 can be achieved by adopting a matching screw connection structure.

The aforesaid C buckle groove 123 is recessed and formed at a predetermined position on the wall surface of the bearing chamber 122 .

The aforementioned electro-drive chamber 124 is recessed and formed on the truncated surface of the shaft section 12 away from the other end of the assembly chamber 121, and is separated from the bearing chamber 122 by a partition B.

The aforementioned connecting hole 125 penetrates through the partition B and communicates with the electric drive chamber 124 and the assembly chamber 121 .

The rear end cover 13 is adjacent to the electric driving chamber 124 and is arranged at the end of the shaft section 12 to limit the cross section of the open end of the electric driving chamber 124 . In practice, the rear end cover 13 is a ring-shaped profile.

Above-mentioned bearing 21 is contained in bearing room 122 of bearing.

The C buckle 22 is inserted into the C buckle groove 123 and pressed against the outer ring of the bearing 21, and restrains the bearing 21 against the partition B.

The above-mentioned electric drive mechanism is connected with a rear end cover 945 of the oil pressure pulse mechanism 94, and includes an outer rotor motor 41, a touch switch 42, and a fan 43.

The outer rotor motor 41 is accommodated in the electric drive chamber 124 and is electrically connected with external power (mains or battery) (not shown in the figure), including an outer rotor 411, a stator 412, a stator seat 413, and at least one supporting member 414 .

The aforementioned outer rotor 411 has a sequence along the extending direction of the outer rotor 411 The extension section 411A, a barrel section 411B, and a buckle section 411C also include a rotor shaft hole 411D formed through the extension section 411A, a stator chamber 411E connected to the rotor shaft hole 411D formed inside the barrel section 411B, and a communication The stator chamber 411E is formed on the inner side of the buckle section 411C and communicates with the outer buckle groove 411F. During implementation, as shown in Figure 6, the buckle groove 411F' can be arranged on the sectional surface of the buckle section 411C. In addition, the rotor shaft hole 411D can be a single diameter threaded hole or a stepped threaded hole (not shown in the figure).

The aforementioned stator 412 is accommodated in the stator chamber 411E of the outer rotor 411 .

The aforementioned stator base 413 has a stator base body 413A, a stator shaft 413B erected on the stator base body 413A, a ring portion 413C set on the preset end face of the stator base body 413A, and a through stator base 413 (the stator shaft 413B The stator shaft hole 413D formed with the stator base body 413A). The stator base body 413A is matched with the ring portion 413C, matching the ring section 411C (and the buckle groove 411F) of the outer rotor 411 and the profile of the cross section of the shaft section 12 . The stator shaft 413B is assembled through the stator 412 . The ring portion 413C is matched with the stator base body 413A and the buckle segment 411C (the buckle groove 411F) of the outer rotor 411 to constrain the support member 414 . In practice, as shown in FIG. 6 , the ring portion 413C can be selectively omitted, and a bead groove 413C' cooperates with the buckle groove 411F' to constrain the support member 414 together. Furthermore, the support member 414 can be a combination of multiple balls or a bearing or other bearing equivalent elements.

A touch switch 42 is set in the stator seat 413 in the concentric stator shaft hole 413D and is electrically connected with the outer rotor motor 41 and external power (not shown in the figure), and is triggered to selectively disconnect the outer rotor motor 41 from the external power supply. Electrical connection.

The fan 43 is set in the main body 91 corresponding to the outer rotor motor 41 .

The above-mentioned tight nut 50 is screwed to the extension section 411A of the outer rotor 411 of the outer rotor motor 41 , resists the inner ring of the bearing 21 , and cooperates with the C buckle 22 to constrain the bearing 21 together.

The above-mentioned oil pressure pulse mechanism 94 roughly includes an oil chamber cylindrical body 942, a The oil storage cylinder 943 accommodated in the oil chamber cylinder 942, a front end cover 944 and a rear end cover 945 respectively arranged at both ends of the oil storage cylinder 943, and a front end cover 944 pierced through are accommodated in the storage tank. The hydraulic rotating shaft 941 of the oil cylinder 943. It further includes a push lever 946 , an elastic member 947 , and a first ring plug 948 and a second ring plug 949 .

The rear end cover 945, one end is inserted in the rotor shaft hole 411D of the extension section 411A of the outer rotor 411 and moves together with it, and also has an oil overflow passage 945A and a first stage that communicate with the oil storage cylinder 943 and communicate with each other. Type shaft hole 945B.

One end of the top lever 946 is accommodated in the stepped shaft hole 945B of the rear end cover 945 , and the other end extends through the stator shaft hole 413D of the stator base 413 to correspond to the touch switch 42 .

The elastic member 947 is sleeved on the outer peripheral side of the push lever 946 and accommodated in the stepped shaft hole 945B, and normally pushes the push lever 946 to move away from the touch switch 42 .

The first ring plug 948 is an annular body that fits on the outer peripheral side of the top lever 946 and is assembled in the rotor shaft hole 411D of the outer rotor 411 to constrain the elastic member 947 and the top lever 946 . During implementation, the first ring plug 948 is to increase the number of steps of the stepped shaft hole 945B, and the first ring plug 948 and the stepped shaft hole 945B hole wall can be integrated into one, so as to omit the first ring plug The implementation of 948 (not shown in the figure).

The second ring plug 949 is an annular body that fits on the outer peripheral side of the push rod 946 and is assembled in the stator shaft hole 413D of the stator base 413 to constrain the push rod 946 .

Therefore, the above is an introduction to the components and assembly methods of a preferred embodiment of the pulse-type electric tool transmission and stop device provided by the present invention, and the operating features of the embodiment of the present invention are introduced as follows.

1 to 5, when the outer rotor motor 41 of the electric drive mechanism 40 is triggered, the outer rotor 411 of the outer rotor motor 41 rotates, so that the extension section After 411A pulls the hydraulic pulse mechanism 94, the end cover 945 moves, so that the pulse torque generated by the hydraulic pulse mechanism 94 is output by the hydraulic rotating shaft 941 .

When the force fed back by the oil pressure pulse mechanism 94 on the oil pressure shaft 941 reaches the set torque value, the hydraulic oil in the oil storage cylinder 943 enters the stepped shaft hole 945B from the rear end cover 945 through the oil spillway 945A, so as to push The push lever 946 compresses the elastic member 947 and moves toward the touch switch 42 , and triggers the touch switch 42 to cut off the electrical connection between the outer rotor motor 41 and the external power.

After the pressure of the hydraulic oil in the oil storage cylinder 943 of the oil pressure pulse mechanism 94 is reduced, the hydraulic oil overflowing to the stepped shaft hole 945B flows back, and the push lever 946 is restored by the elastic member 947 to separate from the touch switch 42. In order to restore the electrical connection between the outer rotor motor 41 and the external power.

The above description is only a preferred embodiment of the present invention, and is intended to clarify the characteristics of the present invention, and is not intended to limit the scope of the embodiments of the present invention. Those of ordinary skill in the art will make equivalent changes according to the present invention. , and changes well known to those skilled in the art should still fall within the scope of the present invention.

10: Shell

11:Front cover

12: axis body

13: rear end cover

43: fan

91: subject

941: hydraulic shaft

Claims (9)

A pulse-type power tool transmission and touch stop device is assembled at the front end of a main body, which includes: a housing, including a front end cover, a shaft section and a rear end cover connected in series, and the shaft section is concentric There are a group of connecting chambers, a bearing chamber, a connecting hole and an electric drive chamber in sequence; a bearing is placed in the bearing chamber; an electric drive mechanism includes: an outer rotor motor, It is accommodated in the electric drive room and electrically connected with an external power, including: an outer rotor, which has an extension section, a barrel section, and a buckle section in sequence along the extension direction, and also includes a A rotor shaft hole and a certain stator chamber are connected in series; a stator is accommodated in the stator chamber; a stator seat is connected with the rear end cover and moves simultaneously, and has a section abutting against the buckle The stator base body, a stator shaft erected on the stator base body, provides the stator sheathing, and a stator shaft hole formed through the stator base; at least one support member is arranged between the buckle section and the stator Between the seat body; a touch switch, which is set concentrically with the stator shaft hole on the stator seat, and is electrically connected to the external power, and is triggered to selectively disconnect the external rotor motor from the external power; a tight nut, which is screwed to the extension section, resists the inner ring of the bearing to restrain the bearing; An oil pressure pulse mechanism is accommodated in the front end cover, including an oil chamber cylinder, an oil storage cylinder accommodated in the oil chamber cylinder, and front end covers respectively arranged at both ends of the oil storage cylinder And a rear end cover, and a hydraulic shaft that penetrates the front end cover and is accommodated in the oil storage cylinder, and also includes a top lever, an elastic member, and a first ring plug, wherein: the rear The end cover is inserted into the rotor shaft hole at one end, and has an oil overflow channel and a step-type shaft hole that communicate with the oil storage cylinder and each other; the top check lever is accommodated in the step-type shaft hole at one end, and The end pierces through the stator shaft hole corresponding to the touch switch. According to claim 1, the pulse-type power tool transmission and trigger stop device, wherein the hydraulic pulse mechanism further includes a set of second ring plugs engaged on the outer peripheral side of the ejector lever and assembled in the stator shaft hole. The pulse type electric tool drive and touch stop device as described in Claim 1, wherein the electric drive chamber and the bearing chamber are separated by a partition. The pulse-type power tool transmission and touch stop device as described in claim 1, wherein the shaft section further includes a C buckle groove formed on the wall of the bearing chamber, providing a C buckle to be inserted and pressed against the bearing outer ring . According to claim 1, the pulse type electric tool transmission and touch stop device, wherein the electric drive mechanism includes a fan set on the main body with a corresponding outer rotor motor. The pulse type power tool transmission and trigger stop device as described in Claim 1, wherein the first ring plug is sleeved on the outer peripheral side of the top lever and assembled in the rotor shaft hole. According to claim 1, the pulse type electric tool transmission and touch stop device, wherein the supporting member can be a combination of multiple balls or at least one bearing. As mentioned in request item 1 or 7, the pulse type electric tool transmission and touch stop device Set, wherein the buckle section is provided with a buckle groove; the stator base body matches the outline of the section of the buckle section (and the buckle groove) to have a ring portion, and jointly constrain the support member. The pulse-type electric tool transmission and touch stop device as described in claim 1 or 7, wherein the buckle section is provided with a buckle groove; the stator base body has a bead groove matching the profile of the buckle section (and the buckle groove) section , cooperate with the buckle groove to constrain the support member together.

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