Multi-head vibratory massage instrument for health care of male genital organ

By designing a multi-head vibration massager, which employs a dual-axis drive motor and an eccentric swing mechanism, multi-point vibration massage of the male genital area is achieved, solving the problems of cumbersome operation and safety hazards of existing prostate treatment devices, and providing a safe and effective rehabilitation treatment solution.

CN223817851UActive Publication Date: 2026-01-23张卓宇
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202423000707.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2026-01-23
Estimated Expiration
2034-12-05

AI Technical Summary

Technical Problem

Existing prostate treatment devices are cumbersome to operate, pose significant safety risks, and are prone to causing inflammation, infection, and damage to reproductive organs. Furthermore, there is a lack of multi-point massage devices on the market.

Method used

A multi-head vibration massager is designed, comprising five massage heads. It achieves vibration massage of the perineum, the base of the testicles, and the base of the penis through a dual-axis drive motor and an eccentric swing and crank-connecting rod mechanism. Flexible rubber cloth is used to connect the massage heads to improve safety.

Benefits of technology

It enables multi-point massage of the male genital area, relieving diseases such as chronic prostatitis. It is highly safe, easy to operate, and has replaced medical and home prostate treatment devices, filling a market gap.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223817851U_ABST
    Figure CN223817851U_ABST
Patent Text Reader

Abstract

The utility model provides a multi-head vibration massage instrument for male genital organ health care, which comprises a shell, a double-shaft driving motor is arranged in the shell, five massage heads are arranged on the shell, the five massage heads are arranged in an isosceles triangle shape, and the massage heads are connected with the double-shaft driving motor. The massage heads located at the vertex angle position of the isosceles triangle are obliquely arranged and connected with the double-shaft driving motor through a crank connecting rod mechanism, and the massage heads located at the waist and the base angle position of the isosceles triangle are connected with the double-shaft driving motor through an eccentric swing mechanism. The prostate therapeutic instrument is compact in structure, the five massage heads are arranged to conduct vibration massage on the perineum point, the testis root Yinlian point and the penis root respectively, male diseases such as chronic prostatitis are relieved, a medical prostate therapeutic instrument and a household prostate therapeutic instrument are effectively replaced, operation is convenient, use is safe, and the market blank at the present stage is filled up.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to massage instrument technical field especially is involved in a kind of multi-head vibration massage instrument for male genital organ health care. BACKGROUND

[0002] Prostate diseases include prostatitis, prostatic hyperplasia, prostatic calculus, prostate cancer, prostatic calculus and prostatic cyst etc. Chronic prostatitis is common disease, frequently-occurring disease of adult male, especially office white-collar and driver etc. sedentary population, sedentary causes male prostate oppression or abrasion and leads to the occurrence of prostatitis, deterioration.

[0003] Due to gland hyperemia for a long time, glandular duct and gland function hypofunction etc. reasons, appear urine frequency, urinary pain, urination not complete, small abdominal distension, lumbar and sacrum radiation pain, perineum is not suitable etc. Symptoms, serious will lead to sexual dysfunction, even a series of problems such as infertility. Due to the complex etiology of chronic prostatitis, the recurrence rate is high, and most of the prostatitis patients are difficult to be effectively treated by medicine, so most patients need long-term rehabilitation treatment by a safe and effective physiotherapy method.

[0004] With the development of society and the progress of science and technology, there are mainly two types of prostate treatment equipment on the market at present, one is medical type prostate treatment instrument, and the other is household type prostate treatment instrument. Among them, the treatment mode of medical type prostate treatment instrument mainly adopts rectal microwave, rectal ultrasonic wave etc. to carry out interventional treatment, and in the treatment process, the patient needs to lie on one side, and the professional physician enters the treatment probe into the rectum through the anus of the patient to treat the prostate. The treatment mode is complicated to operate, and requires high use environment. If aseptic operation is not proper, it may also aggravate inflammation infection. In addition, in the treatment process of entering the rectum, if operation is not proper, it may cause certain degree of burning, scalding etc. trauma risk to local rectal wall, has great safety hidden danger, and patients are generally not easy to accept, and need to go to hospital for treatment many times, which will greatly increase the treatment cost of patients, and is not easy to popularize.

[0005] Home-use prostate physiotherapy devices primarily use external red / blue light lamps, external microwave probes, or external ultrasound probes to directly irradiate the perineum. This method avoids some of the drawbacks of the aforementioned rectal interventional treatments. Red / blue light, during treatment, can produce photochemical effects on the body, penetrating the skin to directly generate a thermal effect on muscles and subcutaneous tissues, altering cell structure, accelerating local blood circulation and metabolism, and promoting disease recovery. Microwave or ultrasound therapy is also based on the principle of biothermal therapy. However, when using these methods to treat chronic prostatitis and other diseases, it is also necessary to avoid irradiating the scrotum. If the scrotum, located close to the perineum, is exposed to heat sources such as red / blue light, microwaves, or ultrasound due to improper use of the device, it can damage the testes and seminiferous tubules, leading to impaired spermatogenesis and testosterone secretion, affecting the patient's fertility and sexual function.

[0006] From the perspective of traditional Chinese medicine, massaging the Huiyin and Yinlian acupoints can invigorate the spirit, eliminate fatigue, and has therapeutic effects on chronic prostatitis and prostate diseases, as well as help improve the function of the reproductive system.

[0007] Currently, there are no similar products on the market. Existing similar products either massage only one area or fail to provide adequate massage. Therefore, it is necessary to develop a device that provides vibration massage to the groin area, perineum, and related acupoints. Utility Model Content

[0008] The purpose of this invention is to provide a multi-head vibration massager for male genital health care, in order to solve the above-mentioned technical problems.

[0009] This utility model provides a multi-head vibration massager for male genital health care, including a housing, a dual-axis drive motor inside the housing, and five massage heads mounted on the housing. The five massage heads are arranged in an isosceles triangle. The massage head located at the apex of the isosceles triangle is inclined and connected to the dual-axis drive motor through a crank-connecting rod mechanism. The massage heads located at the legs and base of the isosceles triangle are connected to the dual-axis drive motor through an eccentric swing mechanism.

[0010] Furthermore, the outer casing includes a top shell and a bottom shell. The massage head is mounted on the top shell, and the dual-axis drive motor is mounted within the mounting space formed by the top shell and the bottom shell. The top shell has a mounting groove, in which a control board and a power supply are mounted. The dual-axis drive motor and the power supply are electrically connected to the control board. The side of the outer casing has a display screen, a switch button, a vibration adjustment button, and a charging port, all electrically connected to the control board.

[0011] Further, a through hole is formed in the top shell, a supporting sleeve is mounted in the through hole, the supporting sleeve is arranged corresponding to the massage head, the connecting rod at the bottom of the massage head extends through the supporting sleeve to the inside of the shell and is connected with the eccentric mechanism, the supporting sleeve is covered with a rubber layer, and the connecting rod of the massage head is connected with the rubber layer through flexible cloth.

[0012] Further, the two massage heads at the bottom angle of the isosceles triangle are connected with the first output shaft of the double-shaft driving motor through a first eccentric swing mechanism.

[0013] Further, the first eccentric swing mechanism comprises a first swing rod, a first swing block is arranged at the middle position of the first swing rod, a first driven wheel is rotatably mounted in the swing block, the first driven wheel is connected with the first output shaft of the double-shaft driving motor through a first eccentric shaft, and the connecting rods of the two massage heads at the bottom angle of the isosceles triangle are connected with the two ends of the first swing rod.

[0014] Further, the two massage heads at the waist position of the isosceles triangle are connected with the second output shaft of the double-shaft driving motor through a second eccentric swing mechanism.

[0015] Further, the second eccentric swing mechanism comprises a second swing rod, a second swing block is arranged at the middle position of the second swing rod, a second driven wheel is rotatably mounted in the swing block, the second driven wheel is connected with the second output shaft of the double-shaft driving motor through a second eccentric shaft, and the connecting rods of the two massage heads at the waist position of the isosceles triangle are connected with the two ends of the second swing rod.

[0016] Further, the massage head at the top angle of the isosceles triangle is connected with the second output shaft of the double-shaft driving motor through a crank connecting rod mechanism.

[0017] Further, the crank connecting rod mechanism and the second output shaft of the double-shaft driving motor are connected through a universal coupling, the input end of the universal coupling is connected with the second driven wheel and is coaxially arranged with the second output shaft of the double-shaft driving motor, and the output end of the universal coupling is connected with the crank connecting rod mechanism.

[0018] Further, a shell is arranged on the inner top wall of the shell, the crank connecting rod mechanism is rotatably mounted in the shell, the output end of the universal coupling drives the crank connecting rod mechanism to rotate, and the connecting rod of the massage head at the top angle of the isosceles triangle is rotatably connected with the shaft neck segment of the crank connecting rod mechanism through the shell.

[0019] This invention is easy to operate and safe to use. By setting five massage heads to vibrate and massage the perineum, the Yinlian acupoint at the base of the testicle, and the base of the penis, it can relieve urological diseases such as chronic prostatitis. It effectively replaces medical and home-use prostate treatment devices, is easy to operate and safe to use, and fills a gap in the current market. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is the front view of the present invention;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 This is a bottom view of the top shell of this utility model;

[0024] Figure 4 This is a bottom view of the internal structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the first eccentric swing mechanism of this utility model;

[0026] Figure 6 For the present utility model Figure 4 Enlarged view of point A in the middle;

[0027] Figure 7 This is a schematic diagram of the second eccentric swing mechanism of this utility model;

[0028] Figure 8 For the present utility model Figure 4 Enlarged view at point B in the middle;

[0029] Figure 9 This is a schematic diagram of the universal coupling of this utility model;

[0030] Figure 10 This is a structural diagram of the shell of this utility model;

[0031] Figure 11 This is a structural diagram of the crank-connecting rod mechanism of this utility model;

[0032] Explanation of reference numerals in the attached figures:

[0033] In the diagram: 1-Outer shell, 11-Top shell, 12-Bottom shell, 13-Handle, 14-Display screen, 15-Switch button, 16-Increase speed button, 17-Decrease speed button, 18-Charging port, 19-Heat dissipation vent, 21-First massage head, 22-Second massage head, 23-Third massage head, 24-Connecting rod, 25-Support sleeve, 3-Dual-axis drive motor, 31-First output shaft, 32-Second output shaft, 33-Connecting block, 4-First eccentric rocking mechanism, 41-First rocking rod, 42 - First rocker block, 43- First driven wheel, 44- First eccentric shaft, 5- Second eccentric rocker mechanism, 51- Second rocker rod, 52- Second rocker block, 53- Second driven wheel, 54- Second eccentric shaft, 6- Universal coupling, 61- Input end, 62- Output end, 63- Bracket, 71- Housing, 72- Mounting plate, 73- Mounting hole, 74- Round hole, 75- Through hole, 8- Crank-connecting rod mechanism, 81- Crank, 82- Journal section, 83- Rotating sleeve, 84- Rotating rod; Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Example 1

[0038] like Figures 1-11 As shown:

[0039] A multi-head vibration massager for male genital health care includes a housing 1, which includes a top shell 11 and a bottom shell 12. The bottom surface of the bottom shell 12 is horizontally arranged. A handle 13 is provided on one side of the housing 1. A display screen 14, a power switch 15, an acceleration button 16, a deceleration button 17, and a charging port 18 are provided on the side of the housing 1.

[0040] like Figure 1 and Figure 2 As shown, five massage heads are installed on the top shell 11 of the outer shell 1, namely two symmetrically arranged first massage heads 21, two symmetrically arranged second massage heads 22, and a third massage head 23.

[0041] The five massage heads are arranged in an isosceles triangle. The two first massage heads 21 are located at the base angles of the isosceles triangle, the two second massage heads 22 are located at the sides of the isosceles triangle, and the third massage head 23 is located at the apex angle of the isosceles triangle and is set at an angle.

[0042] like Figure 3 As shown, a mounting slot is provided inside the top shell 11, and a control board and a power supply are installed in the mounting slot. The display screen 14, switch button 15, speed-up button 16, speed-down button 17 and charging port 18 located on the side of the outer shell 1 are electrically connected to the control board.

[0043] The mounting slot also has a heat dissipation hole 19 that penetrates the top shell 11.

[0044] like Figure 4 As shown, a dual-axis drive motor 3 is installed inside the outer casing 1, and the dual-axis drive motor 3 is installed in the installation space enclosed by the top casing 11 and the bottom casing 12.

[0045] The first massage head 21 is connected to the first output shaft 31 of the dual-axis drive motor 3 via the first eccentric rocking mechanism 4; the second massage head 22 is connected to the second output shaft 32 of the dual-axis drive motor 3 via the second eccentric rocking mechanism 5; and the third massage head 23 is connected to the second output shaft 32 of the dual-axis drive motor 3 via the crank-connecting rod mechanism 8.

[0046] like Figure 3 and Figure 4 As shown, a through hole is provided on the top shell 11, and a support sleeve 25 is installed in the through hole. The support sleeve 25 is set in correspondence with the massage head.

[0047] The connecting rod 24 of the first massage head 21 extends through the support sleeve 25 into the outer shell 1 and is connected to the first eccentric rocking mechanism 4; the connecting rod 24 of the second massage head 22 extends through the support sleeve 25 into the outer shell 1 and is connected to the second eccentric rocking mechanism 5; the connecting rod 24 of the third massage head 23 extends through the support sleeve 25 into the outer shell 1 and is connected to the crank connecting rod mechanism 8.

[0048] The support sleeve 25 is covered with a rubber layer, and the connecting rod 24 is connected to the rubber layer by a flexible rubber cloth.

[0049] like Figures 4-6 As shown, the first eccentric rocking mechanism 4 includes a first rocking rod 41, a first rocking block 42 is provided at the middle position of the first rocking rod 41, and a first driven wheel 43 is rotatably installed inside the rocking block.

[0050] The connecting rods 24 of the two first massage heads 21 are connected to both ends of the first rocker arm 41.

[0051] The first driven wheel 43 is connected to the connecting block 33 of the first output shaft 31 of the dual-axis drive motor 3 via the first eccentric shaft 44. The first eccentric shaft 44 is eccentrically connected to the connecting block 33 of the first driven wheel 43 and the first output shaft 31.

[0052] like Figure 4 and Figure 7 , Figure 8 As shown, the second eccentric rocking mechanism 5 includes a second rocking rod 51, a second rocking block 52 is provided at the middle position of the second rocking rod 51, and a second driven wheel 53 is rotatably installed inside the rocking block.

[0053] The connecting rods 24 of the two second massage heads 22 are connected to both ends of the second rocker arm 51.

[0054] The second driven wheel 53 is connected to the connecting block 33 of the second output shaft 32 of the dual-shaft drive motor 3 via the second eccentric shaft 54. The second eccentric shaft 54 ​​is eccentrically connected to the connecting block 33 of the second driven wheel 53 and the second output shaft 32.

[0055] like Figure 4 , Figure 8and Figure 9 As shown, the crank-connecting rod mechanism 8 is connected to the second output shaft 32 of the dual-shaft drive motor 3 via a universal coupling 6. The input end 61 of the universal coupling 6 is mounted on the surface of the second driven wheel 53 away from the dual-shaft drive motor 3 and is coaxially arranged with the second output shaft 32 of the dual-shaft drive motor 3. The output end 62 of the universal coupling 6 is connected to the crank-connecting rod mechanism 8.

[0056] In this embodiment, the universal coupling 6 is a cross-shaft type universal coupling 6, and the three shaft sections of the universal coupling are respectively provided with rotatably connected brackets 63.

[0057] like Figure 4 and Figure 10 As shown, a housing 71 is provided on the inner top wall of the outer casing 1, and a mounting plate 72 is provided on the top of the housing 71. The housing 71 is installed on the top casing 11 by means of bolts detachably connecting the mounting holes 73 on the mounting plate 72 and the top casing 11. The crank connecting rod mechanism 8 is rotatably installed inside the housing 71.

[0058] The housing 71, the crank connecting rod mechanism 8, and the third massage head 23 are coaxially arranged.

[0059] The mounting plate 72 has a circular hole 74 in the middle position that corresponds to the support sleeve 25. The connecting rod 24 of the third massage head 23 passes through the support sleeve 25 and the circular hole 74 and is connected to the crank connecting rod mechanism 8.

[0060] A through hole 75 is provided on the surface of the housing 71 near the universal coupling 6. The output end 62 of the universal coupling 6 extends through the through hole 75 into the interior of the housing 71 and connects with the crank-connecting rod mechanism 8. The output end 62 of the universal coupling 6 drives the crank-connecting rod mechanism 8 to rotate.

[0061] The end of the crank-connecting rod mechanism 8 furthest from the universal coupling 6 is rotatably connected to the housing 71 via a rotating rod 84. The rotating rod 84 is coaxially arranged with the output end 62 of the universal shaft. The rotation of the crank-connecting rod mechanism 8 is centered on the output end 62 of the universal coupling 6 and the rotating rod 84.

[0062] like Figure 4 , Figure 10 and Figure 11 The crank-connecting rod mechanism 8 includes two cranks 81 arranged opposite to each other. The surfaces of the two cranks 81 facing away from each other are respectively connected to the output end 62 of the universal joint and the rotating rod 84 arranged coaxially. A journal section 82 is provided between the two cranks 81 and is eccentrically arranged with respect to the output end 62 of the universal joint.

[0063] A rotating sleeve 83 is fitted onto the journal section 82 for rotatable connection.

[0064] The connecting rod 24 of the third massage head 23 passes through the support sleeve 25 and the round hole 74, extending into the housing 71 and connecting to the rotating sleeve 83 of the crank connecting rod mechanism 8 shaft journal section 82.

[0065] When in use, this device is placed in the groin area with the handle facing forward. The first massage head 21 vibrates and massages the base of the penis; the second massage head 22 vibrates and massages the Yinlian acupoint at the base of the testicles; and the third massage head 23 vibrates and massages the perineum. The user can adjust the vibration frequency using the speed-up button 16 or the speed-down button 17. The vibration level is displayed on the screen 14.

[0066] This invention is easy to operate and safe to use. By setting five massage heads to vibrate and massage the perineum, the Yinlian acupoint at the base of the testicle, and the base of the penis, it can relieve urological diseases such as chronic prostatitis. It effectively replaces medical and home-use prostate treatment devices, is easy to operate and safe to use, and fills a gap in the current market. It can relieve genital fatigue caused by prolonged sitting and improve energy levels in men.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 therein. Such 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 this utility model.

Claims

1. A multi-head vibration massager for male genital health care, characterized in that... The device includes a housing, within which a dual-axis drive motor is installed. Five massage heads are mounted on the housing, arranged in an isosceles triangle. The massage head located at the apex of the isosceles triangle is inclined and connected to the dual-axis drive motor via a crank-connecting rod mechanism. The massage heads located at the sides and base of the isosceles triangle are connected to the dual-axis drive motor via an eccentric rocking mechanism.

2. The multi-head vibration massager for male genital health care according to claim 1, characterized in that, The outer casing includes a top shell and a bottom shell. The massage head is mounted on the top shell. The dual-axis drive motor is mounted within the mounting space formed by the top shell and the bottom shell. The top shell has a mounting groove, in which a control board and a power supply are mounted. The dual-axis drive motor and the power supply are electrically connected to the control board. The side of the outer casing has a display screen, a switch button, a vibration adjustment button, and a charging port, all electrically connected to the control board.

3. The multi-head vibration massager for male genital health care according to claim 2, characterized in that, The top shell has a through hole, and a support sleeve is installed in the through hole. The support sleeve is correspondingly arranged with the massage head. The connecting rod at the bottom of the massage head extends through the support sleeve into the shell and is connected to the eccentric rocking mechanism. The support sleeve is covered with a rubber layer, and the connecting rod of the massage head is connected to the rubber layer by a flexible cloth.

4. The multi-head vibration massager for male genital health care according to claim 1, characterized in that, The two massage heads located at the base angle of the isosceles triangle are connected to the first output shaft of the dual-axis drive motor via a first eccentric rocking mechanism.

5. The multi-head vibration massager for male genital health care according to claim 4, characterized in that, The first eccentric rocking mechanism includes a first rocking rod, a first rocking block is provided at the middle position of the first rocking rod, a first driven wheel is rotatably installed inside the rocking block, the first driven wheel is connected to the first output shaft of the dual-axis drive motor through a first eccentric shaft, and the connecting rods of the two massage heads located at the base angle of the isosceles triangle are connected to the two ends of the first rocking rod.

6. The multi-head vibration massager for male genital health care according to claim 1, characterized in that, The two massage heads located at the waist of the isosceles triangle are connected to the second output shaft of the dual-axis drive motor via a second eccentric rocking mechanism.

7. The multi-head vibration massager for male genital health care according to claim 6, characterized in that, The second eccentric rocking mechanism includes a second rocking rod, a second rocking block is provided at the middle position of the second rocking rod, a second driven wheel is rotatably installed inside the rocking block, the second driven wheel is connected to the second output shaft of the dual-axis drive motor through a second eccentric shaft, and the connecting rods of the two massage heads located at the waist of the isosceles triangle are connected to the two ends of the second rocking rod.

8. The multi-head vibration massager for male genital health care according to claim 7, characterized in that, The massage head, located at the apex of the isosceles triangle, is connected to the second output shaft of the dual-axis drive motor via a crank-connecting rod mechanism.

9. The multi-head vibration massager for male genital health care according to claim 8, characterized in that, The crank-connecting rod mechanism is connected to the second output shaft of the dual-shaft drive motor via a universal coupling. The input end of the universal coupling is connected to the second driven wheel and is coaxially arranged with the second output shaft of the dual-shaft drive motor. The output end of the universal coupling is connected to the crank-connecting rod mechanism.

10. The multi-head vibration massager for male genital health care according to claim 9, characterized in that, The inner top wall of the outer shell is provided with a housing, the crank-connecting rod mechanism is rotatably installed in the housing, the output end of the universal coupling drives the crank-connecting rod mechanism to rotate, and the connecting rod of the massage head located at the vertex of the isosceles triangle passes through the housing and is rotatably connected to the journal section of the crank-connecting rod mechanism.